Add 21/16 and 56/15
1st number: 1 5/16, 2nd number: 3 11/15
21/16 + 56/15 is 1211/240.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 15 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 16 × 15 = 240,
21/16 = 21 × 15/16 × 15 = 315/240 - Likewise, for the 2nd fraction, since 15 × 16 = 240,
56/15 = 56 × 16/15 × 16 = 896/240 - Add the two like fractions:
315/240 + 896/240 = 315 + 896/240 = 1211/240 - So, 21/16 + 56/15 = 1211/240
In mixed form: 511/240
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