Question

Gasiti x,y,z, cunoscand ca {x,y,z} i.p. {2,3,6} si x-y+z=15

Answer 1

2x=3y=6z=k
x=k/2
y=k/3
z=k/6
x-y+z=15
k/2-k/3+k/6=15
(3k-2k+k)/6=15
2k=15·6
k=90/2
k=45
x=k/2=45/2
x=22,5
y=45/3=15
y=15
z=45/6
z=7,5
22,5-15+7,5=15