Question

Solve the following equation:

$\frac{x-8}{5}=\frac{x-12}{9}$

Answer 1

$\frac{x-8}{5}=\frac{x-12}{9}\Rightarrow 9(x-8)=5(x-12)\text{by cross multiplying}\Rightarrow 9x-72=5x-60\Rightarrow 9x-5x=-60+72\Rightarrow 4x=12\Rightarrow x=\frac{12}{4}\Rightarrow x=3$