Add 21/20 and 36/27
1st number: 1 1/20, 2nd number: 1 9/27
21/20 + 36/27 is 143/60.
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,
36/27 = 36 × 20/27 × 20 = 720/540 - Add the two like fractions:
567/540 + 720/540 = 567 + 720/540 = 1287/540 - 1287/540 simplified gives 143/60
- So, 21/20 + 36/27 = 143/60
In mixed form: 223/60
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