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Daca 2x+3y supra 4x+y= 2 supra 3 atunci x supra y =?

Răspuns :

[tex] \frac{2x+3y}{4x+y} =\frac{2}{3}\\ 2(4x+y)=3(2x+3y)\\ 8x+2y=6x+9y\\ 2x=7y\\\frac{x}{y}=\frac{7}{2}[/tex]
2x +3y / 4x + y = 2 /3
3( 2x + 3y) = 2(4x + y)
6x + 9y = 8x + 2y 
9y - 2y = 8x - 6x 
7y = 2x 
x/y = 7/2