Add 3/4 and 21/28
3/4 + 21/28 is 3/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 28 is 28
Next, find the equivalent fraction of both fractional numbers with denominator 28 - For the 1st fraction, since 4 × 7 = 28,
3/4 = 3 × 7/4 × 7 = 21/28 - Likewise, for the 2nd fraction, since 28 × 1 = 28,
21/28 = 21 × 1/28 × 1 = 21/28 - Add the two like fractions:
21/28 + 21/28 = 21 + 21/28 = 42/28 - 42/28 simplified gives 3/2
- So, 3/4 + 21/28 = 3/2
In mixed form: 11/2
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