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
$3x + 6 = 3(x + 2) \ 3x + 6 = 3x + 6 \ 3x - 3x = 6 - 6 \ 0 = 0$