Question

Aflati x si y stiind ca: x-y=10, iar x/y=5/3

Answer 1

x - y = 10
x/y = 5/3 --> x= 5y/3 
5y/3 - y = 10 , amplificam y cu 3 
5y/3 - 3y/3 = 10
2y/3 = 10
2y = 30
y = 30/2 --> y= 15 

x - y = 10
x - 15 = 10
x = 10 + 15 --> x = 25 

25 - 15 = 10 --> x= 25 , y=15