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