Add 15/2 and 21/30
1st number: 7 1/2, 2nd number: 21/30
15/2 + 21/30 is 41/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 30 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 2 × 15 = 30,
15/2 = 15 × 15/2 × 15 = 225/30 - Likewise, for the 2nd fraction, since 30 × 1 = 30,
21/30 = 21 × 1/30 × 1 = 21/30 - Add the two like fractions:
225/30 + 21/30 = 225 + 21/30 = 246/30 - 246/30 simplified gives 41/5
- So, 15/2 + 21/30 = 41/5
In mixed form: 81/5
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