Question

gente me ajudeem pfvzinho é pra agr ​

Answer 1

o) $3x=-9\\x=\frac{-9}{3} \\x=-3$

q)$3x-13=8\\3x=8+13\\3x=21\\x=\frac{21}{3} \\x=7$

Answer 2

Resposta:

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