Add 84/28 and 81/60
1st number: 3 0/28, 2nd number: 1 21/60
84/28 + 81/60 is 87/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 60 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 28 × 15 = 420,
84/28 = 84 × 15/28 × 15 = 1260/420 - Likewise, for the 2nd fraction, since 60 × 7 = 420,
81/60 = 81 × 7/60 × 7 = 567/420 - Add the two like fractions:
1260/420 + 567/420 = 1260 + 567/420 = 1827/420 - 1827/420 simplified gives 87/20
- So, 84/28 + 81/60 = 87/20
In mixed form: 47/20
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