Resposta :

MATHSPHIS
[tex]\frac{x}{3}+13=30 \\ \\ \frac{x}{3}=30-13 \\ \\ \frac{x}{3}=17 \\ \\ x=3.17 \\ \\ x=51[/tex]
GabrielAw9
1/3x+13=30
1/3x=30-13
1/3x=17
x=17/1/3
x=17.3/1
x=51

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