Add 21/84 and 63/21
1st number: 21/84, 2nd number: 3 0/21
21/84 + 63/21 is 13/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 21 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 21 × 4 = 84,
63/21 = 63 × 4/21 × 4 = 252/84 - Add the two like fractions:
21/84 + 252/84 = 21 + 252/84 = 273/84 - 273/84 simplified gives 13/4
- So, 21/84 + 63/21 = 13/4
In mixed form: 31/4
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