Add 15/12 and 21/56
1st number: 1 3/12, 2nd number: 21/56
15/12 + 21/56 is 13/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 56 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 12 × 14 = 168,
15/12 = 15 × 14/12 × 14 = 210/168 - Likewise, for the 2nd fraction, since 56 × 3 = 168,
21/56 = 21 × 3/56 × 3 = 63/168 - Add the two like fractions:
210/168 + 63/168 = 210 + 63/168 = 273/168 - 273/168 simplified gives 13/8
- So, 15/12 + 21/56 = 13/8
In mixed form: 15/8
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