Add 21/3 and 42/54
1st number: 7 0/3, 2nd number: 42/54
21/3 + 42/54 is 70/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 54 is 54
Next, find the equivalent fraction of both fractional numbers with denominator 54 - For the 1st fraction, since 3 × 18 = 54,
21/3 = 21 × 18/3 × 18 = 378/54 - Likewise, for the 2nd fraction, since 54 × 1 = 54,
42/54 = 42 × 1/54 × 1 = 42/54 - Add the two like fractions:
378/54 + 42/54 = 378 + 42/54 = 420/54 - 420/54 simplified gives 70/9
- So, 21/3 + 42/54 = 70/9
In mixed form: 77/9
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