The purpose is to isolate A
to do this, divide both sides by 15
Answer:
Step-by-step explanation:
The missing options are:

For this exercise it is important to remember the mulitplication of signs:

By definition, the sum is the result of an addition.
Therefore, you need to add the numbers given in the exercise (-15 and 6) in order to find its sum. This is:
(Since the greatest number has a negative sign, the sum is negative).
Knowing this, you can check each option to find the expression whose sum is -9:

The answer is the option "d".
Answer:
1 1/1
Step-by-step explanation:
4x1 = 4 + 1 = 5 = 1 = 1 1/1
Answer:
3R
Step-by-step explanation: