Question

Вопрос №48921

Answer 1

8= 3х-12-х 8=2х-12 20=2х х=10

Answer 2

3*x-3*4-x=8 => 3*x-12-x=8 => 3*x-x=8+12 => 2*x=20 => x=20/2 => x=10