Add 21/20 and 7/80
1st number: 1 1/20, 2nd number: 7/80
21/20 + 7/80 is 91/80.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 80 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 20 × 4 = 80,
21/20 = 21 × 4/20 × 4 = 84/80 - Likewise, for the 2nd fraction, since 80 × 1 = 80,
7/80 = 7 × 1/80 × 1 = 7/80 - Add the two like fractions:
84/80 + 7/80 = 84 + 7/80 = 91/80 - So, 21/20 + 7/80 = 91/80
In mixed form: 111/80
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