- how do you simplify (4-a)/(1-a) =

This appears to already by simplified. Is there a second part to the problem?

- how do you simplify (4-a)/(1-a) =

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This appears to already by simplified. Is there a second part to the problem?

It certainly doesn't feel as if you need to simplify any more, or can at all for that matter.

This is the simplest way to write the expression. you can not simplify any more.

are you sure you got the problem right? It's already simplified.