$$3x\cdot\frac{127}{3} = 3x\cdot\frac{247}{3}$$

$$ \begin{aligned} 3x\cdot\frac{127}{3} &= 3x\cdot\frac{247}{3}&& \text{multiply ALL terms by } \color{blue}{ 3 }. \\[1 em]33x\cdot\frac{127}{3} &= 33x\cdot\frac{247}{3}&& \text{cancel out the denominators} \\[1 em]381x &= 741x&& \text{move the $ \color{blue}{ 741x } $ to the left side} \\[1 em]381x-741x &= 0&& \text{simplify left side} \\[1 em]-360x &= 0&& \text{ divide both sides by $ -360 $ } \\[1 em]x &= \frac{0}{-360}&& \\[1 em]x &= 0&& \\[1 em] \end{aligned} $$

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