For this case we must simplify the following expression:
We eliminate the parentheses taking into account that:

So:

We add similar terms taking into account that:
Equal signs are added and the same sign is placed.
Different signs are subtracted and the major sign is placed.

Answer:

Answer:
39 = r-13
Step-by-step explanation:
Answer:
a dog
Step-by-step explanation:
Answer:
64
Step-by-step explanation:
its just how it is