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UNO [17]
3 years ago
7

Subtract. 3 – (–18) a. –21 b. –15 c. 15 d. 21

Mathematics
1 answer:
Rom4ik [11]3 years ago
5 0
I learned to do KCC (Keep Change Change)

Keep 3 change the sign, and change the 18 to positive.
3+18

Answer: d= 21

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