Add 3/21 and 81/56
1st number: 3/21, 2nd number: 1 25/56
3/21 + 81/56 is 89/56.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 56 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 21 × 8 = 168,
3/21 = 3 × 8/21 × 8 = 24/168 - Likewise, for the 2nd fraction, since 56 × 3 = 168,
81/56 = 81 × 3/56 × 3 = 243/168 - Add the two like fractions:
24/168 + 243/168 = 24 + 243/168 = 267/168 - 267/168 simplified gives 89/56
- So, 3/21 + 81/56 = 89/56
In mixed form: 133/56
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