The subtraction theorem states that for all real numbers,

and

,

.
(To subtract, we can add the inverse.)
Thus, we can have the these two equivalent expressions.
Answer:
A= 3
Step-by-step explanation:
4a - 7 = 5
move the constant to the right
4a= 5+7
divide
4a=12
Awnser:
A= 3
Answer:
Step-by-step explanation:

Answer:
i think that the correct answer is a
Step-by-step explanation:
Answer: 384 or 528 depending if you have to add the interest he already earned
Step-by-step explanation: