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mihalych1998 [28]
1 year ago
13

Add: 5/7 + 9/11 + 21/77

Mathematics
1 answer:
Vsevolod [243]1 year ago
4 0

Answer:

Step-by-step explanation:

You want to begin by making each fraction have  the same common denominator. The LCF (least common factor) is 77. So, knowing this, we can now multiply the fractions that need to have a denominator of 77.

1. 5/7*11/11=55/77

2. 9/11 * 7/7 =63/77

Now we can add

55/77 + 63/77 + 21/77 = 139/77 or 1.805194805

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