(3x - 5)(2x + 7) = (3x + 1)(2x - 3) + 4x
6x^2 + 21x - 10x - 35 = 6x^2 - 9x + 2x - 3 + 4x
6x^2 + 11x - 35 = 6x^2 - 3x - 3 + 4x
11x - 35 = 1x - 3
10x = 32
x = 3.2
Ответ: x = 3.2.
(3x - 5)(2x + 7) = (3x + 1)(2x - 3) + 4x
6x^2 + 21x - 10x - 35 = 6x^2 - 9x + 2x - 3 + 4x
6x^2 + 11x - 35 = 6x^2 - 3x - 3 + 4x
11x - 35 = 1x - 3
10x = 32
x = 3.2
Ответ: x = 3.2.