{x;y;z}i.p.{5;6;10}
5x=6y=10z=k
x=k/5
y=k/6
z=k/10
5x+4y-8z=520
5k/5+4k/6-8k/10=520
k+2k/3-4k/5=520 /•15
15k+10k-12k=7800
13k=7800
k=7800/13; k=600
x=600/5=120
y=600/6=100
z=600/10=60
(x;y;z)={(120; 100; 60)}
Răspuns:
Explicație pas cu pas:
