Add 21/84 and 4/3
1st number: 21/84, 2nd number: 1 1/3
21/84 + 4/3 is 19/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 3 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 84 × 1 = 84,
21/84 = 21 × 1/84 × 1 = 21/84 - Likewise, for the 2nd fraction, since 3 × 28 = 84,
4/3 = 4 × 28/3 × 28 = 112/84 - Add the two like fractions:
21/84 + 112/84 = 21 + 112/84 = 133/84 - 133/84 simplified gives 19/12
- So, 21/84 + 4/3 = 19/12
In mixed form: 17/12
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