Add 20/12 and 21/15
1st number: 1 8/12, 2nd number: 1 6/15
20/12 + 21/15 is 46/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 15 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 12 × 5 = 60,
20/12 = 20 × 5/12 × 5 = 100/60 - Likewise, for the 2nd fraction, since 15 × 4 = 60,
21/15 = 21 × 4/15 × 4 = 84/60 - Add the two like fractions:
100/60 + 84/60 = 100 + 84/60 = 184/60 - 184/60 simplified gives 46/15
- So, 20/12 + 21/15 = 46/15
In mixed form: 31/15
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