13x - (x - 5) = 2(2x + 1)13x - x + 5 = 4x + 212x + 5 = 4x + 212x - 4x = 2 - 58x = -3x = -3/8
Ответ: x = -3/8
13x - (x - 5) = 2(2x + 1)
13x - x + 5 = 4x + 2
12x + 5 = 4x + 2
12x - 4x = 2 - 5
8x = -3
x = -3/8
Ответ: x = -3/8