x/2=z/4 y/3=z/4
x/2=y/3=z/4
令x/2=y/3=z/4=k
x=2k
y=3k
z=4k
5x+3z-2y=16
5*2k+3*4k-2*3k=16
10k+12k-6k=16
16k=16
k=1
x=2k=2*1=2
y=3k=3*1=3
z=4k=4*1=4