Question

|3x +5| = 7
Помогите​

Answer 1

$|3x + 5| = 7 \\ 3x + 5 = 7 \: , \: 3x + 5 = - 7$

3х+5=7 | 3х+5=-7

3х=7-5 | 3х= -7-5

3х=2. | 3х=-12

х=2/3 | х=-4

$x_{1} = - 4 \\ x_{2} = \frac{2}{3}$