Add 21/28 and 21/7
1st number: 21/28, 2nd number: 3 0/7
21/28 + 21/7 is 15/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 7 is 28
Next, find the equivalent fraction of both fractional numbers with denominator 28 - For the 1st fraction, since 28 × 1 = 28,
21/28 = 21 × 1/28 × 1 = 21/28 - Likewise, for the 2nd fraction, since 7 × 4 = 28,
21/7 = 21 × 4/7 × 4 = 84/28 - Add the two like fractions:
21/28 + 84/28 = 21 + 84/28 = 105/28 - 105/28 simplified gives 15/4
- So, 21/28 + 21/7 = 15/4
In mixed form: 33/4
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