Add 21/15 and 18/5
1st number: 1 6/15, 2nd number: 3 3/5
21/15 + 18/5 is 5/1.
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,
21/15 = 21 × 1/15 × 1 = 21/15 - Likewise, for the 2nd fraction, since 5 × 3 = 15,
18/5 = 18 × 3/5 × 3 = 54/15 - Add the two like fractions:
21/15 + 54/15 = 21 + 54/15 = 75/15 - 75/15 simplified gives 5/1
- So, 21/15 + 18/5 = 5/1
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