Question

A raiz da equação 3(x+2)+4=13 é:

a- 1
b- 2
c- 3
d- 4

Answer 1

$3\left(x+2\right)+4=13\\3\left(x+2\right)+4-4=13-4\\3\left(x+2\right)=9\\\frac{3\left(x+2\right)}{3}=\frac{9}{3}\\x+2=3\\x+2-2=3-2\\x=1$