Add 21/84 and 84/36
1st number: 21/84, 2nd number: 2 12/36
21/84 + 84/36 is 31/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 36 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 84 × 3 = 252,
21/84 = 21 × 3/84 × 3 = 63/252 - Likewise, for the 2nd fraction, since 36 × 7 = 252,
84/36 = 84 × 7/36 × 7 = 588/252 - Add the two like fractions:
63/252 + 588/252 = 63 + 588/252 = 651/252 - 651/252 simplified gives 31/12
- So, 21/84 + 84/36 = 31/12
In mixed form: 27/12
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