Ex 24 va rog urgent imi trebuie la tema. Mulțumesc!

3x/5=k=>x=5k/3
2y/3=k=>y=3k/2
6z/7=k=>z=7k/6
xyz=630<=>105k^3/36=630<=>105k^3=22680=>k^3=216=>k=6
x=5•6/3=10
x=10
y=3•6/2=9
y=9
z=7•6/6=7
z=7