What expression is equivalent to 42x-56y

For this case, the first thing we must do is find the multiples of the coefficients.

We have then:

We observe that the biggest common factor is given by 7.

Therefore, by rewriting the expression we have:

An equivalent expression is given by:

explanation:

previous steps have made pa≅ pb ≅ st ≅ su. setting the compass width to ab allows you to make tu the same length. then δstu ≅ δpab by the sss congruence postulate, and ∠p ≅ ∠s by the reason cpctc.