Question

Tìm x,y biết : x/12 =y/3 và x-y=36

Answer 1

x = 48

y= 12                       

Answer 2

\(\frac{x}{12}=\frac{y}{3}=\frac{x-y}{12-3}=\frac{36}{9}=4;\frac{x}{12}=4\Rightarrow x=4.12\Rightarrow x=48;\frac{y}{3}=4\Rightarrow y=4.3\Rightarrow y=12\)