Add 3/60 and 21/7
1st number: 3/60, 2nd number: 3 0/7
3/60 + 21/7 is 61/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 7 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 60 × 7 = 420,
3/60 = 3 × 7/60 × 7 = 21/420 - Likewise, for the 2nd fraction, since 7 × 60 = 420,
21/7 = 21 × 60/7 × 60 = 1260/420 - Add the two like fractions:
21/420 + 1260/420 = 21 + 1260/420 = 1281/420 - 1281/420 simplified gives 61/20
- So, 3/60 + 21/7 = 61/20
In mixed form: 31/20
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