Question

I need help and have to show my work

Answer 1

Okay 
5.
m+4=17
   -4   -4
    m=13
6.
12=24-y
24-12
y=12
7.
15-b=12
-12   -12
b=3
8.
10t=90
90/10
t=9
9.
22/y=2
22/2
y=11
10.
54=6b
54/6
b=9