Add 18/15 and 21/27
1st number: 1 3/15, 2nd number: 21/27
18/15 + 21/27 is 89/45.
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,
18/15 = 18 × 9/15 × 9 = 162/135 - Likewise, for the 2nd fraction, since 27 × 5 = 135,
21/27 = 21 × 5/27 × 5 = 105/135 - Add the two like fractions:
162/135 + 105/135 = 162 + 105/135 = 267/135 - 267/135 simplified gives 89/45
- So, 18/15 + 21/27 = 89/45
In mixed form: 144/45
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