Răspuns :
Bună!
a) [tex]\frac{x}{x-y} =\frac{3}{2} \\2x=3x-3y\\-x=-3y\\x=3y\\=> \frac{x}{y} =\frac{3y}{y} =3[/tex]
b) [tex]\frac{2x+3y}{3x+9y} =\frac{2}{5} \\10x+15y=6x+18y\\4x=3y\\=> \frac{x}{y} =\frac{3}{4}[/tex]
Bună!
a) [tex]\frac{x}{x-y} =\frac{3}{2} \\2x=3x-3y\\-x=-3y\\x=3y\\=> \frac{x}{y} =\frac{3y}{y} =3[/tex]
b) [tex]\frac{2x+3y}{3x+9y} =\frac{2}{5} \\10x+15y=6x+18y\\4x=3y\\=> \frac{x}{y} =\frac{3}{4}[/tex]