(5x-3)+(7x-4) = 8 - (15-11x)12x - 7 = 8 - 15 + 11x12x - 7 = -7 + 11x12x - 11x = -7 + 7x = 0
Ответ: г) 0
(5x-3)+(7x-4) = 8 - (15-11x)
12x - 7 = 8 - 15 + 11x
12x - 7 = -7 + 11x
12x - 11x = -7 + 7
x = 0
Ответ: г) 0