Add 21/20 and 45/48
1st number: 1 1/20, 2nd number: 45/48
21/20 + 45/48 is 159/80.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 48 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 20 × 12 = 240,
21/20 = 21 × 12/20 × 12 = 252/240 - Likewise, for the 2nd fraction, since 48 × 5 = 240,
45/48 = 45 × 5/48 × 5 = 225/240 - Add the two like fractions:
252/240 + 225/240 = 252 + 225/240 = 477/240 - 477/240 simplified gives 159/80
- So, 21/20 + 45/48 = 159/80
In mixed form: 179/80
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