Answer:
10
Explanation:
Simplify the following:
-5 + 12 + 10 - 7
Hint: | Group the positive and negative terms in -5 + 12 + 10 - 7 together and factor out the minus sign.
-5 + 12 + 10 - 7 = (12 + 10) - (5 + 7):
(12 + 10) - (5 + 7)
Hint: | Evaluate 12 + 10 using long addition.
| 1 | 2
+ | 1 | 0
| 2 | 2:
22 - (5 + 7)
Hint: | Evaluate 5 + 7.
5 + 7 = 12:
22 - 12
Hint: | Subtract 12 from 22.
| 2 | 2
- | 1 | 2
| 1 | 0:
Answer: 10