Mathematics, 12.07.2019 10:30 sierrathomas431
Can someone tell me if this is right
Answers: 2
![\bf 3|x|+7=28\implies 3|x|=21\implies |x|=\cfrac{21}{3}\implies |x|=7\implies \begin{cases} +(x)=7\\ -(x)=7 \end{cases} \\\\[-0.35em] ~\dotfill\\\\ +(x)=7\implies \boxed{x=7}~\hfill -x=7\implies \boxed{x=-7}](/tpl/images/0080/5890/f748d.png)
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