Add 21/60 and 14/21
21/60 + 14/21 is 61/60.
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,
21/60 = 21 × 7/60 × 7 = 147/420 - Likewise, for the 2nd fraction, since 21 × 20 = 420,
14/21 = 14 × 20/21 × 20 = 280/420 - Add the two like fractions:
147/420 + 280/420 = 147 + 280/420 = 427/420 - 427/420 simplified gives 61/60
- So, 21/60 + 14/21 = 61/60
In mixed form: 11/60
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