Answer:
Step-by-step explanation:
1.6/x=3/8
do cross multiplication
x*3=6*8
x=48/3
x=16
2.b/8=3/4
b*4=8*3
b=24/4
b=6
4.n/8=35/7
35*8=7*n
280=7n
280/7=n
40=n
