Add 81/60 and 70/28
1st number: 1 21/60, 2nd number: 2 14/28
81/60 + 70/28 is 77/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 28 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 60 × 7 = 420,
81/60 = 81 × 7/60 × 7 = 567/420 - Likewise, for the 2nd fraction, since 28 × 15 = 420,
70/28 = 70 × 15/28 × 15 = 1050/420 - Add the two like fractions:
567/420 + 1050/420 = 567 + 1050/420 = 1617/420 - 1617/420 simplified gives 77/20
- So, 81/60 + 70/28 = 77/20
In mixed form: 317/20
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