Question

Подробнее решите пожалуйста

Answer 1

$4x + 5 = 2x - 7 \\ 4x - 2x = - 7 + 5 \\ 2x = - 2 \\ x = - \frac{2}{2} \\ x = - 1$
$5x - 7 = 13 \\ 5x = 13 + 7 \\ 5x = 20 \\ x = \frac{20}{5} \\ x = 4$
$3(x + 2) = 2(x + 2) \\ 3x + 6 = 2x + 4 \\ 3x - 2x = 4 - 6 \\ x = - 2$
$2x - 4 = 8 + 2x \\ 2x - 2x = 8 + 4$
4)нет решения
$4x + 6 = 2(2x + 3) \\ 4x + 6 = 4x + 6 \\ 4x - 4x = 6 - 6 \\ 0 = 0$
$3x + 4 = 7x - 8 \\ 3x - 7x = - 8 - 4 \\ - 4x = - 12 \\ 4x = 12 \\ x = 3$
$2x - 3 = 10 \\ 2x = 13 \\ x = \frac{13}{2} \\ x = 6.5$
$2(x + 1) = 3(x + 1) \\ 2x + 2 = 3x + 3 \\ 2x - 3x = 3 - 2 \\ - x = 1 \\ x = - 1$
$3x - 5 = 3 + 3x \\ 3x - 3x = 3 + 5$
9) решения нет
$3x + 6 = 3(x + 2) \\ 3x + 6 = 3x + 6 \\ 3x - 3x = 6 - 6 \\ 0 = 0$