Question

a) 2.(x-3)=-5.(x+5)

b) 2x-18x+20=40

c) 3x-22=6x+42

Answer 1

A) 2x-6=-5x-25 -> 2x+5x-6+25=0 7x+19=0 -> 7x=-19 -> x= -19/7= -2,71 B) 2x-18x+20-40=0 -16x -20 =0 -> -16x=20 (-1) -> 16x=-20 -> x= -20/16= -1,25 C)3x-6x-22-42=0 -3x=64 (-1) X=-64/3 X= 21,33