Question

-2(1 – 9x) + = 7(x + 1) + 11
х= ?​

Answer 1

Ответ:

x = 20/11

Пояснение:

-2(1-9x) = 7(x+1)+11

-2 × 1 + 2 × 9 × x = 7 × x + 7 × 1 + 11

-2 + 18x = 18 + 7x

18x = 7x + 20

11x = 20

x = 20/11