Add 15/2 and 21/54
1st number: 7 1/2, 2nd number: 21/54
15/2 + 21/54 is 71/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 54 is 54
Next, find the equivalent fraction of both fractional numbers with denominator 54 - For the 1st fraction, since 2 × 27 = 54,
15/2 = 15 × 27/2 × 27 = 405/54 - Likewise, for the 2nd fraction, since 54 × 1 = 54,
21/54 = 21 × 1/54 × 1 = 21/54 - Add the two like fractions:
405/54 + 21/54 = 405 + 21/54 = 426/54 - 426/54 simplified gives 71/9
- So, 15/2 + 21/54 = 71/9
In mixed form: 78/9
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