Add 21/2 and 72/5
1st number: 10 1/2, 2nd number: 14 2/5
21/2 + 72/5 is 249/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 5 is 10
Next, find the equivalent fraction of both fractional numbers with denominator 10 - For the 1st fraction, since 2 × 5 = 10,
21/2 = 21 × 5/2 × 5 = 105/10 - Likewise, for the 2nd fraction, since 5 × 2 = 10,
72/5 = 72 × 2/5 × 2 = 144/10 - Add the two like fractions:
105/10 + 144/10 = 105 + 144/10 = 249/10 - So, 21/2 + 72/5 = 249/10
In mixed form: 249/10
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