Add 21/20 and 45/25
1st number: 1 1/20, 2nd number: 1 20/25
21/20 + 45/25 is 57/20.
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,
45/25 = 45 × 4/25 × 4 = 180/100 - Add the two like fractions:
105/100 + 180/100 = 105 + 180/100 = 285/100 - 285/100 simplified gives 57/20
- So, 21/20 + 45/25 = 57/20
In mixed form: 217/20
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