Add 15/16 and 21/20
1st number: 15/16, 2nd number: 1 1/20
15/16 + 21/20 is 159/80.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 20 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 16 × 5 = 80,
15/16 = 15 × 5/16 × 5 = 75/80 - Likewise, for the 2nd fraction, since 20 × 4 = 80,
21/20 = 21 × 4/20 × 4 = 84/80 - Add the two like fractions:
75/80 + 84/80 = 75 + 84/80 = 159/80 - So, 15/16 + 21/20 = 159/80
In mixed form: 179/80
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