Hi, ihave 2007 colt . I have got uneven tyre wear on insde edge on both rear Wheels can the rear wheels be re alignment or is it more serious

Yes, this does matter. This affects the 'Toe In' of the vehicle. Toe in affects how the steering naturally straightens itself when travelling in a straight line. Both front wheels should have a small amount of toe in as a factory setting.
Toe In is, when measured across the vehicle, the front edges of the tyres measuring slightly closer together compared to same measurement on the rear edges of the Same tyres. If you don't correct this the vehicle won't steer correctly and it will cause seriously uneven wear on the outer edges of the tyres.
With the wheels on and the vehicle level, turn the steering wheel to straight ahead. Have a close look at the wheels to see If they look like they're turned in or out. You might get one that looks straight and the other slightly turned in or out.
If your not sure I would seriously recommend you take the vehicle to your nearest tyre and wheel specialist and get them to reset the tracking and the wheel alignment for you. They will have the specialist tools for the job as the measurements involved will be millimetre differences.

Uneven tyre wear is caused by either worn bushes or incorrect tracking.

It sounds as though your car is 'toe in' and needs the wheels tracking - aligning. Take it to a tyre fitting bay - it doesn't cost much to have it checked/rectified.

Bent wheel, defective tyre, wheels out of balance, alignment and uneven tyre wear, defective or worn shock absorbers, excessive wear or lash in the steering/suspension components, binding front brake(s), front brake discs warped or excessive axial runout...

Most commonly it is wheel imbalance that is the culprit.

Good day
This sounds strange. You have to confirm if the rear diff is mounted correct and confirm that the diff is not bent. The easy way is to take it in to a tire shop and check the wheel alignment.
Good luck.

In the UK we would say 'have the car tracked' .. the wheel alignment checked and adjusted, which is a relatively straightforward and easy job.

However, be aware that there are other causes of tyre wear which isn't rectified by having the wheels aligned.

A bent or damaged steering arm can cause tyre wear. I once owned an old Mercedes that quickly wore one front tyre. Despite having the wheels tracked - aligned - three times, the tyre still wore. It wasn't until I looked under the car myself and found a damaged steering arm ...

A worn ball joint or worn/soft rubber bush can cause tyre wear. Having the wheels aligned cures nothing without first identifying the fault. I own a 1998 Jeep Grand Cherokee which, I am aware, has worn rubber bushes in the front steering/suspension set up. The front tyres wear badly, caused by the worn bushes. The tyres need replacing soon anyway, but I'll wait to get the tracking-alignment- done until after I've replaced the rubber bushes/tyres.

You've had wheel alignment done a couple of times and the problem of worn tyres is still there. It's not the wheel alignment at fault .. there's some other reason such as worn ball joint/rubber bushes or maybe impact damage to a steering arm.

The best option is to get a workshop to put the car up on a hoist for inspection. Tell them that wheel alignment ISN'T the cause of your uneven tyre wear. Any half-decent workshop should be able to find the cause within a few minutes.

A car which has suffered severe side impact - and has been repaired - can have a twisted/misaligned body. This too can cause uneven tyre wear

Three common faults here are;
1) Steering alignment - if the front tyres are wearing on the insides then the wheels are facing toe-out. If on the outsides then they're toe-in. The only way to really get them aligned properly is by laser light at a garage. Cause can be altered ride height, mounting a kerb badly, wear in suspension.
2) Worn part in the suspension system, most likely a suspension arm bush or ball joint has deteriorated, uneven and/or premature tyre wear suggests this is more likely the cause.
3) Uneven tyre pressures or sizes. If a tyre is down on pressure or one wheel is oddly sized then you can get a diagonal pivot effect accross the car's chassis, causing it to pull to one side.This effect can also happen due to a broken suspension coil/leaf spring for the same reason.

out side edge wear usually means positive camber, dont know if rear camber is adjustable on your car. alignment specs arnt going to help you unless you have an aligment rack

If they are all terain or off road tyre's then it's normal if it has road tyre's then it would be best to get it checked wheel bearings and brakes.

indicates a wheel alignment problem
have the rear suspension checked and aligned first then have the front redone
the car could be going sideways down the road because the rear wheel are not in line with the front tires
not self centering and stiff indicates not enough castor

Uneven tyre wear can only really be caused by either worn suspension or steering components, or wheel alignment angles incorrect. The best way to check this out is to get a wheel alignment carried out by a reputable specialist, as they will (or certainly should) go over your suspension and steering first to make sure there are no faults before they reset the wheel alignment. The other thing to note is that if the uneven tyre wear is bad enough the wheel alignment won't fix the wear problem, just slow it down.
The shimmy could be caused by a couple of things (driveshaft out of balance, tyre fault, wheel balance) but the best thing to do initially is get the wheels balanced first and see if that fixes the problem, and then go from there.
The same company should be able to both the alignment and balance, and these jobs should both be done periodically (at least whenever you replace tyres) to improve tyre life and make the vehicle easier and nicer to drive.

Hope this helps,
Mark.