Question

Stiind ca $\frac{3x-y}{x+y} = \frac{9}{27} ,aflati \frac{x}{y}$ .Vreau problema rezolavata prin metoda proportiilor derivate cu alti termeni

Answer 1

((3x-y)/(x+y)= 9/27

27(3x-y)=9(x+y)
81x-27y= 9x+9y
72x=36y     impartim prin 72y
x/y= 36/72= 1/2