$$3x+2\cdot(4+6x) = 113$$
Answer
$$ x = 7 $$
Explanation
$$ \begin{aligned} 3x+2\cdot(4+6x) &= 113&& \text{simplify left side} \\[1 em]3x+8+12x &= 113&& \\[1 em]15x+8 &= 113&& \text{ move 8 to the right } \\[1 em]15x &= 113-8&& \\[1 em]15x &= 105&& \text{ divide both sides by $ 15 $ } \\[1 em]x &= \frac{105}{15}&& \\[1 em]x &= 7&& \\[1 em] \end{aligned} $$
This page was created using
Equations Solver