Question

The factorising of 2r(y-x)+3(x-y)

Answer 1

$2r(y - x) + 3(x - y) \\ 2ry - 2rx + 3x - 3y \\ y(2r - 3) - x(2r - 3) \\ (2r - 3)(y - x)$

Answer 2

Hello!
Here is your answer

(y-x) can be written as( - (x-y) )

As 2r is before (y-x)

it changed as
-2r ( x - y) + 3 (x - y)

= ( 3 - 2r )(x-y)