Answer:
Explanation:
1) Simplify 5 - 10 to -5.
2) Remove parentheses.
3) Simplify 3 + 5 to 8.
4) Simplify 8 - 7 to 1.
5) Simplify 1 + 2 to 2.
6) Simplify.
Therefor, the answer is -4.
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