Add 21/15 and 12/5
1st number: 1 6/15, 2nd number: 2 2/5
21/15 + 12/5 is 19/5.
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,
21/15 = 21 × 1/15 × 1 = 21/15 - Likewise, for the 2nd fraction, since 5 × 3 = 15,
12/5 = 12 × 3/5 × 3 = 36/15 - Add the two like fractions:
21/15 + 36/15 = 21 + 36/15 = 57/15 - 57/15 simplified gives 19/5
- So, 21/15 + 12/5 = 19/5
In mixed form: 34/5
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