$$4x\cdot\frac{31}{2} = 14$$
Answer
$$ x = \frac{7}{31} $$
Explanation
$$ \begin{aligned} 4x\cdot\frac{31}{2} &= 14&& \text{multiply ALL terms by } \color{blue}{ 2 }. \\[1 em]24x\cdot\frac{31}{2} &= 2\cdot14&& \text{cancel out the denominators} \\[1 em]124x &= 28&& \text{ divide both sides by $ 124 $ } \\[1 em]x &= \frac{28}{124}&& \\[1 em]x &= \frac{7}{31}&& \\[1 em] \end{aligned} $$
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