Add 21/54 and 12/9
1st number: 21/54, 2nd number: 1 3/9
21/54 + 12/9 is 31/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 9 is 54
Next, find the equivalent fraction of both fractional numbers with denominator 54 - For the 1st fraction, since 54 × 1 = 54,
21/54 = 21 × 1/54 × 1 = 21/54 - Likewise, for the 2nd fraction, since 9 × 6 = 54,
12/9 = 12 × 6/9 × 6 = 72/54 - Add the two like fractions:
21/54 + 72/54 = 21 + 72/54 = 93/54 - 93/54 simplified gives 31/18
- So, 21/54 + 12/9 = 31/18
In mixed form: 113/18
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