Add 63/60 and 64/21
1st number: 1 3/60, 2nd number: 3 1/21
63/60 + 64/21 is 1721/420.
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,
63/60 = 63 × 7/60 × 7 = 441/420 - Likewise, for the 2nd fraction, since 21 × 20 = 420,
64/21 = 64 × 20/21 × 20 = 1280/420 - Add the two like fractions:
441/420 + 1280/420 = 441 + 1280/420 = 1721/420 - So, 63/60 + 64/21 = 1721/420
In mixed form: 441/420
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