Question

Помогите пожалуйста;|3х-9|=6 и |5/m|=2/3 очень нужно!

Answer 1

1)

$|3x - 9| = 6$

$3x - 9 = 6 \\ 3x = 6 + 9 \\ 3x = 15 \\ x = \frac{15}{3} \\ x_{1} = 5$

$3x - 9 = - 6 \\ 3x = - 6 + 9 \\ 3x = 3 \\ x = \frac{3}{3} \\ x = 1$

2)

$| \frac{5}{m} | = \frac{2}{3} \: \: \: \: \: \: m≠0 \\ \frac{ |5| }{ |m| } = \frac{2}{3} \\ \frac{5}{ |m| } = \frac{2}{3} \\ 15 = 2 |m| \\ 2 |m| = 15 \\ |m| = \frac{15}{2} \\ m_{1} = \frac{15}{2} \\ m_{2} = - \frac{15}{2}$