$$ \begin{aligned} 2 &= \frac{m}{2}-7&& \text{multiply ALL terms by } \color{blue}{ 2 }. \\[1 em]2\cdot2 &= 2 \cdot \frac{m}{2}-2\cdot7&& \text{cancel out the denominators} \\[1 em]4 &= m-14&& \text{ swap the left and right side of the equation } \\[1 em]m-14 &= 4&& \text{ move -14 to the right } \\[1 em]m &= 4+14&& \\[1 em]m &= 18&& \\[1 em]m &= 18&& \\[1 em] \end{aligned} $$

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