Add 72/28 and 81/40
1st number: 2 16/28, 2nd number: 2 1/40
72/28 + 81/40 is 1287/280.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 28 × 10 = 280,
72/28 = 72 × 10/28 × 10 = 720/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
81/40 = 81 × 7/40 × 7 = 567/280 - Add the two like fractions:
720/280 + 567/280 = 720 + 567/280 = 1287/280 - So, 72/28 + 81/40 = 1287/280
In mixed form: 4167/280
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