Упростите 3(2х – 9) – 4( - 3х + 2) и - 3, 5 ∙ (4а – 2х) + ( - 3а – 5, 2х)

Question

Упростите
3(2х – 9) – 4( - 3х + 2) и - 3, 5 ∙ (4а – 2х) + ( - 3а – 5, 2х)

Answer 1

3(2x-9)-4(-3x+2)=6x-27+12x-8=18x-35
-3.5(4a-2x)+(-3a-5.2x)=-14a+7x-3a-5.2x=-17a+1.8x