Add 20/15 and 21/27
1st number: 1 5/15, 2nd number: 21/27
20/15 + 21/27 is 19/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 27 is 135
Next, find the equivalent fraction of both fractional numbers with denominator 135 - For the 1st fraction, since 15 × 9 = 135,
20/15 = 20 × 9/15 × 9 = 180/135 - Likewise, for the 2nd fraction, since 27 × 5 = 135,
21/27 = 21 × 5/27 × 5 = 105/135 - Add the two like fractions:
180/135 + 105/135 = 180 + 105/135 = 285/135 - 285/135 simplified gives 19/9
- So, 20/15 + 21/27 = 19/9
In mixed form: 21/9
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