Question

|5x-3|=7
решите пж, дам 30 баллов​

Answer 1

$|5x-3|=7\\\\\left[\begin{array}{lcl}5x-3=-7\\5x-3=7\end{array}\ <=> \ \ \left[\begin{array}{lcl}5x = -4\\5x=10\end{array}\ <=> \ \ \left[\begin{array}{lcl}x_1=-0.8\\x_2=2\end{array}$

Ответ:  $x_1=-0.8\,; \ \ x_2=2$

Answer 2

1.
5х-3=7
5х=7+3
5х=10
х=2

2. 5х-3=-7
5х=-7+3
5х=-4
х=-0,8