Question

3) Fie x supra y=3 supra 5 si x+y=16. Sa se afle x si y.

Answer 1

x/y=3/5
x+y=16     x=16-y
(16-y)/y=3/5
5*(16-y)=3*y
80-5y=3y
80=3y+5y
8y=80
y=80:8=10
y=10
x=16-y=16-10=6
x=6