Question

x/5 - x/2 = -3 ? Como que faz essa equação

Answer 1

$\frac{x}{5}-\frac{x}{2}~=~-3\\\\\\MMC~=~10\\\\\\\frac{2~.~x~-~5~.~x}{10}~=~-3\\\\\\2x-5x~=~-3~.~10\\\\\\-3x~=~-30\\\\\\x~=~\frac{-30}{-3}\\\\\\\boxed{x~=~10}$