Add 25/21 and 28/7
1st number: 1 4/21, 2nd number: 4 0/7
25/21 + 28/7 is 109/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 7 is 21
Next, find the equivalent fraction of both fractional numbers with denominator 21 - For the 1st fraction, since 21 × 1 = 21,
25/21 = 25 × 1/21 × 1 = 25/21 - Likewise, for the 2nd fraction, since 7 × 3 = 21,
28/7 = 28 × 3/7 × 3 = 84/21 - Add the two like fractions:
25/21 + 84/21 = 25 + 84/21 = 109/21 - So, 25/21 + 28/7 = 109/21
In mixed form: 54/21
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