Write as an addition problem and find the sum.Susan lost 9 pounds the first week, gained 6 pounds the second week, and lost 7 pounds the third week. What was her net gain or loss?
A. 9 + (-6) + 7 = -22 pounds
B. 9 + (-6) + 7 = 22 pounds
C. -9 + 6 + (-7) = 10 pounds
D. -9 + 6 + (-7) = -10 pounds
Answer: D
Mathematics
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÷ 1
A. 1
B. 
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