Answer:
A = C + 16
Step-by-step explanation:
Given
A = B + 12 and B = C + 4, then substitute B = C+ 4 into A, that is
A = C + 4 + 12
A = C + 16
Use a calculator.
Easiest way.
Answer:
30
Step-by-step explanation:
Add all of them
Answer:
-4t
Step-by-step explanation:
9-t-3(t+3)
use distributive property and simplify
= 9-t-3t-9
= -4t