Question

(x+y)(3a-b)-(2x-3y)(3a-b)

Answer 1

=(3ax+3ay-bx-by)-(6ay-2xb-9ay+3yb)
=3ax+3ay-bx-by-6ay+2xb+9ay-3yb
=3a(x+y)-b(x+y)-3ay(3-3)+b(2x-3y)

Answer 2

$\blue{ YOUR \: ANSWER }$

$= (3a - b)(x + y - 2x + 3y) \\ \\ = (3a - b)(4y - x)$

$\green {I \: \: hope }\red{ \: it \: \: will \: \: help \: \: you}$