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Marrrta [24]
2 years ago
7

Subtract (2/7 -5/21 ) from the sum of 3/4, 5/7 and 7/12​

Mathematics
1 answer:
olga55 [171]2 years ago
6 0
2/7 - 5/21 = 6/21 - 5/21 (find common denominator first, then subtract)
6/21 - 5/21 = 1/21

3/4 = 63/84
5/7 = 60/84
7/12 = 49/84

63/84 + 60/84+ 49/84 = 172/84
172/84 - 4/84 = 168/84

The answer is 168/84, or 2. Hope this helped!
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