Answer:
142
Step-by-step explanation:
The first step would be to add 7 to both sides.
3n-7=30
add 7
3n=37
divide by 3
n=12.33
Step-by-step explanation:
78 = m32
m = 78/32 = 39/16 = 2.4375
Answer:
D
Step-by-step explanation:
3
+ 2
is in simplest form and cannot be simplified further