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Vitek1552 [10]
3 years ago
13

What is 18 though 21?

Mathematics
1 answer:
Stells [14]3 years ago
3 0
18. -500 + 250 = -250
19. -550 - 300 = - 850
20. 116 - (-50) = 116 + 50 = 166
21. 2500 + 1800 - 2200 = 2100
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