Question

Решите уравнение 6x - (10 - x) = 6x - 12.

Answer 1

$6x - 10 + x - 6x + 12 = 0 \\ x + 2 = 0 \\ x = - 2$

Answer 2

$6x - (10 - x) = 6x - 12$

$6x - 10 + x = 6x - 12$

$6x - 6x +x = - 12 +10$

$x = -2$