Add 42/54 and 21/12
1st number: 42/54, 2nd number: 1 9/12
42/54 + 21/12 is 91/36.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 12 is 108
Next, find the equivalent fraction of both fractional numbers with denominator 108 - For the 1st fraction, since 54 × 2 = 108,
42/54 = 42 × 2/54 × 2 = 84/108 - Likewise, for the 2nd fraction, since 12 × 9 = 108,
21/12 = 21 × 9/12 × 9 = 189/108 - Add the two like fractions:
84/108 + 189/108 = 84 + 189/108 = 273/108 - 273/108 simplified gives 91/36
- So, 42/54 + 21/12 = 91/36
In mixed form: 219/36
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