Add 5/60 and 81/21
1st number: 5/60, 2nd number: 3 18/21
5/60 + 81/21 is 331/84.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 21 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 60 × 7 = 420,
5/60 = 5 × 7/60 × 7 = 35/420 - Likewise, for the 2nd fraction, since 21 × 20 = 420,
81/21 = 81 × 20/21 × 20 = 1620/420 - Add the two like fractions:
35/420 + 1620/420 = 35 + 1620/420 = 1655/420 - 1655/420 simplified gives 331/84
- So, 5/60 + 81/21 = 331/84
In mixed form: 379/84
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