Add 21/20 and 15/56
1st number: 1 1/20, 2nd number: 15/56
21/20 + 15/56 is 369/280.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 56 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 20 × 14 = 280,
21/20 = 21 × 14/20 × 14 = 294/280 - Likewise, for the 2nd fraction, since 56 × 5 = 280,
15/56 = 15 × 5/56 × 5 = 75/280 - Add the two like fractions:
294/280 + 75/280 = 294 + 75/280 = 369/280 - So, 21/20 + 15/56 = 369/280
In mixed form: 189/280
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