Add 5/15 and 21/20
1st number: 5/15, 2nd number: 1 1/20
5/15 + 21/20 is 83/60.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 20 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 15 × 4 = 60,
5/15 = 5 × 4/15 × 4 = 20/60 - Likewise, for the 2nd fraction, since 20 × 3 = 60,
21/20 = 21 × 3/20 × 3 = 63/60 - Add the two like fractions:
20/60 + 63/60 = 20 + 63/60 = 83/60 - So, 5/15 + 21/20 = 83/60
In mixed form: 123/60
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