Add 15/2 and 21/12
1st number: 7 1/2, 2nd number: 1 9/12
15/2 + 21/12 is 37/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 12 is 12
Next, find the equivalent fraction of both fractional numbers with denominator 12 - For the 1st fraction, since 2 × 6 = 12,
15/2 = 15 × 6/2 × 6 = 90/12 - Likewise, for the 2nd fraction, since 12 × 1 = 12,
21/12 = 21 × 1/12 × 1 = 21/12 - Add the two like fractions:
90/12 + 21/12 = 90 + 21/12 = 111/12 - 111/12 simplified gives 37/4
- So, 15/2 + 21/12 = 37/4
In mixed form: 91/4
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