5x(12x - 7) - 4x(15x - 11) = 30 + 29x
60x^2 - 35x - 60x^2 + 44x = 30 + 29x
9x = 30 + 29x
9x - 29x = 30
-20x = 30
x = 30 / (-20)
x = -1.5
Ответ: x = -1.5
5x(12x - 7) - 4x(15x - 11) = 30 + 29x
60x^2 - 35x - 60x^2 + 44x = 30 + 29x
35x + 44x = 30 + 29x9x = 30 + 29x
9x - 29x = 30
-20x = 30
x = 30 / (-20)
x = -1.5
Ответ: x = -1.5