Answer: 11.8
Step-by-step explanation:
Answer:
it can literally be anything you didnt give any information about the first number
Step-by-step explanation:
B and C I believe .............
We can write out a formula in order to solve this. Since sum represents addition, if x represents the unknown number, we can write the formula: x+51=-21. Then, to solve for x, you would subtract 51 from both sides to get x=-72 which is the final answer.
