Question

x/y=2/3 x+y=15 xy-?
va rog mult

Answer 1

$\frac{x}{y} = \frac{2}{3} =K$
x=2K
y=3K
2K+3K=15
5K=15
K=15:5
K=3
x=3x2⇒x=6
y=3x3⇒y=9

Answer 2

2y=3x
x+y=15/ori2
2x+2y=30
2x+3x=30
5x=30
x=30:5
x=6
y=15-6
y=9