$$ \begin{aligned} 20+\frac{20}{0x\cdot5}+5 &= 0&& \text{multiply ALL terms by } \color{blue}{ 0x\cdot5 }. \\[1 em]0x\cdot5\cdot20+0x\cdot5\cdot\frac{20}{0x\cdot5}+0x\cdot5\cdot5 &= 0x\cdot5\cdot0&& \text{cancel out the denominators} \\[1 em]0+500x^2+0 &= 0&& \text{simplify left side} \\[1 em]0+500x^2+0 &= 0&& \\[1 em]500x^2 &= 0&& \\[1 em] \end{aligned} $$

This page was created using