Answer:
Step-by-step explanation:
lets express x,y and z in terms of constant of proportionality k
x=3k
y=5k
z=9k
Now substitute these expressions into the given equation:
2(3k)−5(5k)+7(9k)=352
Simplify:
6k−25k+63k=352
44k=352
k=8
x= 3k=3*8=24
y= 5k = 5*8=40
z= 9k = 9*8=72
