Add 21/4 and 81/56
1st number: 5 1/4, 2nd number: 1 25/56
21/4 + 81/56 is 375/56.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 56 is 56
Next, find the equivalent fraction of both fractional numbers with denominator 56 - For the 1st fraction, since 4 × 14 = 56,
21/4 = 21 × 14/4 × 14 = 294/56 - Likewise, for the 2nd fraction, since 56 × 1 = 56,
81/56 = 81 × 1/56 × 1 = 81/56 - Add the two like fractions:
294/56 + 81/56 = 294 + 81/56 = 375/56 - So, 21/4 + 81/56 = 375/56
In mixed form: 639/56
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