Resposta:
[tex]\frac{3x+6}{6}=\frac{7}{2}\\\\\frac{6\left(3x+6\right)}{6}=\frac{7\cdot \:6}{2}\\\\3x+6=21\\\\3x+6-6=21-6\\\\3x=15\\\\\frac{3x}{3}=\frac{15}{3}\\\\x=5[/tex]
R: X=5
Explicação passo-a-passo:
3x+6/6 = 7/2= 3x+6= 21 /6
3x+6=21 = 3x=21-6
x=15/3= 5
