Add 25/4 and 28/21
1st number: 6 1/4, 2nd number: 1 7/21
25/4 + 28/21 is 91/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 21 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 4 × 21 = 84,
25/4 = 25 × 21/4 × 21 = 525/84 - Likewise, for the 2nd fraction, since 21 × 4 = 84,
28/21 = 28 × 4/21 × 4 = 112/84 - Add the two like fractions:
525/84 + 112/84 = 525 + 112/84 = 637/84 - 637/84 simplified gives 91/12
- So, 25/4 + 28/21 = 91/12
In mixed form: 77/12
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