Question: How to reduce a fraction

As an intermeditae result I get from maple

A*x^beta = R-1/((y/A)^((1-beta)/beta)/(A*beta))(1-t)

It is obvious, that two fractions can be reduced by (1-t).

I could not reach this with simplify, solve, factor, expand, ...

Any idea?

 

In addition in the numerator (1-t)^2 is possible. How do I get this?

Thanks for any help !

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