Question

resolva esse problema pfv

Answer 1

Resposta:

$10y=\frac{x}{2}+10\\\frac{x}{2}+10=10y\\\frac{x}{2}+10-10=10y-10\\\frac{x}{2}=10y-10\\\frac{2x}{2}=2\cdot \:10y-2\cdot \:10\\x=20y-20$