Question

помогите пожалуйста срочно надо

Answer 1

$1) 3x + 4 = 7x - 8 \\ 3x +47 - 8 \\ 50x - 8 \\ 2(25x - 4) \\ \\ 2) 2x - 3 = 10 \\ 2x = 10 + 3 \\ 2x = 13 \\ x = \frac{13}{2}$
$3) 2(x + 1) = 3(x + 1) \\ 2(x + 1) - 3(x + 1) = 0 \\ (2 - 3) \times (x + 1) = 0 \\ - 1(x + 1) = 0 \\ x + 1 = 0 \\ x = - 1$
$4)3x - 5 = 3 + 3x \\ - 5 = 3$