Question

Stiind ca x+2y supra x+5y = 10 supra 19 sa se determine x supra y.

Answer 1

x+2y/x+5y=10/19

19(x+2y)=10(x+5y)

19x+38y=10x+50y

19x-10x=50y-38y

9x=12y

x/y=12/9

x/y=4/3

Answer 2

Răspuns

4/3 ;

Explicație pas cu pas:

(x+2y)/(x+5y) = 10/19 ;

19(x+2y) = 10(x+5y) ;

19x+38y = 10x+50y ;

19x-10x = 50y-38y ;

9x = 12y ;

x/y = 12/9 = 4/3 ;