$$2030 = \frac{1}{5}+x$$

$$ \begin{aligned} 2030 &= \frac{1}{5}+x&& \text{multiply ALL terms by } \color{blue}{ 5 }. \\[1 em]5\cdot2030 &= 5\cdot\frac{1}{5}+5x&& \text{cancel out the denominators} \\[1 em]10150 &= 1+5x&& \text{ swap the left and right side of the equation } \\[1 em]1+5x &= 10150&& \text{ move 1 to the right } \\[1 em]5x &= 10150-1&& \\[1 em]5x &= 10149&& \text{ divide both sides by $ 5 $ } \\[1 em]x &= \frac{10149}{5}&& \\[1 em] \end{aligned} $$

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