Question

-30+2.(9-3x)=5.(x+2)-2

Answer 1

$-30+2.(9-3x)=5.(x+2)-2 \\ \\ -30 + 18 - 6x= 5x+10-2 \\ \\ -30+18-10+2= 5x+6x \\ \\ -20= 11x \\ \\ \boxed{ - \dfrac{20}{11} =x }$

Verificación 


$-30+2.(9-3x)=5.(x+2)-2 \\ \\ -30+2.(9-3 *(-\frac{20}{11}))=5.((- \frac{20}{11})+2)-2 \\ \\ -30+2.(9+ \frac{60}{11})=5.( \frac{-20+22}{11})-2 \\ \\ -30+2.( \frac{99+60}{11})=5.( \frac{-20+22}{11})-2 \\ \\ -30+2.( \frac{159}{11})=5.( \frac{2}{11})-2 \\ \\ -30+ \frac{318}{11}= \frac{10}{11}-2 \\ \\\frac{-330+318}{11}= \frac{10-22}{11} \\ \\ \boxed{- \dfrac{12}{11} = - \dfrac{12}{11}\quad \checkmark}$


Espero que te sirva, salu2!!!!