Question

como resolver isto:x/2-7=x/4+5

Answer 1

$\dfrac{x}{2}-7=\dfrac{x}{4}+5\Longrightarrow\dfrac{x\cdot2}{4}-\dfrac{7\cdot4}{4}=\dfrac{x}{4}+\dfrac{5\cdot4}{4}\Longrightarrow\dfrac{2x}{4}-\dfrac{28}{4}=\dfrac{x}{4}+\dfrac{20}{4}\\\\ \Longrightarrow2x-28=x+20\Longrightarrow2x-x=20+28\Longrightarrow\boxed{x=48}$