Add 21/20 and 81/25
1st number: 1 1/20, 2nd number: 3 6/25
21/20 + 81/25 is 429/100.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 25 is 100
Next, find the equivalent fraction of both fractional numbers with denominator 100 - For the 1st fraction, since 20 × 5 = 100,
21/20 = 21 × 5/20 × 5 = 105/100 - Likewise, for the 2nd fraction, since 25 × 4 = 100,
81/25 = 81 × 4/25 × 4 = 324/100 - Add the two like fractions:
105/100 + 324/100 = 105 + 324/100 = 429/100 - So, 21/20 + 81/25 = 429/100
In mixed form: 429/100
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