Question

поогите решить поставлю макс балов 2(-20x-50)=100

Answer 1

-40x - 100 = 100;

-40x = 200;

x = 200/(-40) = -5.

Answer 2

-20x-50=50

Answer 3

-20x=50+50

Answer 4

-20x=100

Answer 5

x=-5