Add 20/21 and 25/4
1st number: 20/21, 2nd number: 6 1/4
20/21 + 25/4 is 605/84.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 4 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 21 × 4 = 84,
20/21 = 20 × 4/21 × 4 = 80/84 - Likewise, for the 2nd fraction, since 4 × 21 = 84,
25/4 = 25 × 21/4 × 21 = 525/84 - Add the two like fractions:
80/84 + 525/84 = 80 + 525/84 = 605/84 - So, 20/21 + 25/4 = 605/84
In mixed form: 717/84
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