3 years ago

-(-7-9-20)+(-3+11-21)

Mathematics

1 answer:

Darina [25.2K]3 years ago

3 0

-(-7-9-20)+(-3+11-21)
= 7 + 9 + 20 - 3 + 11 - 21
= 47 - 24
= 23

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