Question
$$5 = x+1+3x$$
Answer
$$ x = 1 $$
Explanation
$$ \begin{aligned} 5 &= x+1+3x&& \text{simplify right side} \\[1 em]5 &= 4x+1&& \text{ swap the left and right side of the equation } \\[1 em]4x+1 &= 5&& \text{ move 1 to the right } \\[1 em]4x &= 5-1&& \\[1 em]4x &= 4&& \text{ divide both sides by $ 4 $ } \\[1 em]x &= \frac{4}{4}&& \\[1 em]x &= 1&& \\[1 em] \end{aligned} $$
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