Question

56 a=70b si a supra b=x supra 36

Answer 1

56a=70b
a/b=70/56
a/b=x/36
70/56=x/36
x=36*70/56
x=45

Answer 2

$56a=70b \\ \frac{a}{b}=\frac{x}{36} \\ \frac{70}{56}=\frac{x}{36} \\ x=\frac{70*36}{56} \\ x=\frac{2520}{56} \\ x=45$