Question
$$4+\frac{1}{5}x = -1$$
Answer
$$ x = -25 $$
Explanation
$$ \begin{aligned} 4+\frac{1}{5}x &= -1&& \text{multiply ALL terms by } \color{blue}{ 5 }. \\[1 em]5\cdot4+5 \cdot \frac{1}{5}x &= 5\cdot(-1)&& \text{cancel out the denominators} \\[1 em]20+x &= -5&& \text{ move 20 to the right } \\[1 em]x &= -5-20&& \\[1 em]x &= -25&& \\[1 em]x &= -25&& \\[1 em] \end{aligned} $$
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