Add 81/28 and 21/4
1st number: 2 25/28, 2nd number: 5 1/4
81/28 + 21/4 is 57/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 4 is 28
Next, find the equivalent fraction of both fractional numbers with denominator 28 - For the 1st fraction, since 28 × 1 = 28,
81/28 = 81 × 1/28 × 1 = 81/28 - Likewise, for the 2nd fraction, since 4 × 7 = 28,
21/4 = 21 × 7/4 × 7 = 147/28 - Add the two like fractions:
81/28 + 147/28 = 81 + 147/28 = 228/28 - 228/28 simplified gives 57/7
- So, 81/28 + 21/4 = 57/7
In mixed form: 81/7
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