Question

1,5(2x+5)+x=3(0,5x-7)+3,5

Answer 1

1.5(2x+5)+x=3(0.5x-7)+3.5
3x+7.5+x=1.5x-21+3.5
4x-1.5x=-21+3.5-7.5
2.5x=-25
x=-25/2.5
x=-10

Answer 2

3x+7,5+x=1,5x-21+3,5;
4x+7,5=1,5x-21+3,5;
4x-1,5x=-7,5-21+3,5;
2,5x=-25;
x=25:2,5;
x=10.
Ответ:x=10.

Answer 3

X = -10