Add 18/15 and 21/5
1st number: 1 3/15, 2nd number: 4 1/5
18/15 + 21/5 is 27/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 5 is 15
Next, find the equivalent fraction of both fractional numbers with denominator 15 - For the 1st fraction, since 15 × 1 = 15,
18/15 = 18 × 1/15 × 1 = 18/15 - Likewise, for the 2nd fraction, since 5 × 3 = 15,
21/5 = 21 × 3/5 × 3 = 63/15 - Add the two like fractions:
18/15 + 63/15 = 18 + 63/15 = 81/15 - 81/15 simplified gives 27/5
- So, 18/15 + 21/5 = 27/5
In mixed form: 52/5
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