Add 21/28 and 7/4
1st number: 21/28, 2nd number: 1 3/4
21/28 + 7/4 is 5/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 4 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 4 × 7 = 28,
7/4 = 7 × 7/4 × 7 = 49/28 - Add the two like fractions:
21/28 + 49/28 = 21 + 49/28 = 70/28 - 70/28 simplified gives 5/2
- So, 21/28 + 7/4 = 5/2
In mixed form: 21/2
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