Question 786537
-7- (-13) - (-4) +(-9) + 2
-7 + 13 + 4 - 9 + 2 (simplify by replacing negatives with positives)

(-7 + 13) + 4 - 9 + 2 (perform operations from left to right)
6 + 4 - 9 + 2

(6 + 4) - 9 + 2
10 - 9 + 2

(10 - 9) + 2
1 + 2

3