Question

Y/2-y/5=5 Quanto que é

Answer 1

$\displaystyle \mathsf{\frac{y}{2} - \frac{y}{5} = 5}$

Tiramos mmc de 2 e 5:

$\displaystyle \mathsf{\begin{array}{r|l} 2, 5 & 2\\ 1, 5 &5\\ 1,1 & 2.5 = \boxed{10}\end{array}}$

$\displaystyle \mathsf{\frac{y}{2} - \frac{y}{5} = 5}\\ \\ \displaystyle \mathsf{\frac{5y - 2y}{10} = 5}\\ \\ \displaystyle \mathsf{\frac{3y}{10} = 5}$

Multiplicamos em cruz:

$\displaystyle \mathsf{3y = 5.10}\\ \displaystyle \mathsf{3y = 50}\\ \\ \displaystyle \mathsf{y = \frac{50}{3}}\\ \\ \displaystyle \boxed{\mathsf{Resposta: y = \frac{50}{3}}}$