Add 81/60 and 15/84
1st number: 1 21/60, 2nd number: 15/84
81/60 + 15/84 is 107/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 84 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 84 × 5 = 420,
15/84 = 15 × 5/84 × 5 = 75/420 - Add the two like fractions:
567/420 + 75/420 = 567 + 75/420 = 642/420 - 642/420 simplified gives 107/70
- So, 81/60 + 15/84 = 107/70
In mixed form: 137/70
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