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alexandr1967 [171]
2 years ago
9

1. 3+(-20)= 2. (-8)-12= 3.(-15)-(-10)= 4.(-19)+18=

Mathematics
1 answer:
seropon [69]2 years ago
7 0

Answer:

1. -17     2. -20     3. -5    4. -1

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