Add 42/84 and 21/9
1st number: 42/84, 2nd number: 2 3/9
42/84 + 21/9 is 17/6.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 9 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 84 × 3 = 252,
42/84 = 42 × 3/84 × 3 = 126/252 - Likewise, for the 2nd fraction, since 9 × 28 = 252,
21/9 = 21 × 28/9 × 28 = 588/252 - Add the two like fractions:
126/252 + 588/252 = 126 + 588/252 = 714/252 - 714/252 simplified gives 17/6
- So, 42/84 + 21/9 = 17/6
In mixed form: 25/6
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