Add 21/20 and 15/27
1st number: 1 1/20, 2nd number: 15/27
21/20 + 15/27 is 289/180.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 27 is 540
Next, find the equivalent fraction of both fractional numbers with denominator 540 - For the 1st fraction, since 20 × 27 = 540,
21/20 = 21 × 27/20 × 27 = 567/540 - Likewise, for the 2nd fraction, since 27 × 20 = 540,
15/27 = 15 × 20/27 × 20 = 300/540 - Add the two like fractions:
567/540 + 300/540 = 567 + 300/540 = 867/540 - 867/540 simplified gives 289/180
- So, 21/20 + 15/27 = 289/180
In mixed form: 1109/180
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