Add 81/21 and 5/28
1st number: 3 18/21, 2nd number: 5/28
81/21 + 5/28 is 113/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 28 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 21 × 4 = 84,
81/21 = 81 × 4/21 × 4 = 324/84 - Likewise, for the 2nd fraction, since 28 × 3 = 84,
5/28 = 5 × 3/28 × 3 = 15/84 - Add the two like fractions:
324/84 + 15/84 = 324 + 15/84 = 339/84 - 339/84 simplified gives 113/28
- So, 81/21 + 5/28 = 113/28
In mixed form: 41/28
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