Question
$$4a+8 = -13+7a$$
Answer
$$ a = 7 $$
Explanation
$$ \begin{aligned} 4a+8 &= -13+7a&& \text{move the $ \color{blue}{ 7a } $ to the left side and $ \color{blue}{ 8 }$ to the right} \\[1 em]4a-7a &= -13-8&& \text{simplify left and right hand side} \\[1 em]-3a &= -21&& \text{ divide both sides by $ -3 $ } \\[1 em]a &= \frac{-21}{-3}&& \\[1 em]a &= 7&& \\[1 em] \end{aligned} $$
This page was created using
Equations Solver