Question

4. Решите уравнение 8 х + 5 (6 – 7х) = – 7х + 10

Answer 1

8x+30-35x= -7x+10
-28x+7x=10-30
-21x=-20
x=20/21

Answer 2

8х+30-35х=-7х+10
8х-35х+7х=10-30
-20х=-20
х=-20:(-20)
х=1