Add 5/21 and 12/4
1st number: 5/21, 2nd number: 3 0/4
5/21 + 12/4 is 68/21.
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,
5/21 = 5 × 4/21 × 4 = 20/84 - Likewise, for the 2nd fraction, since 4 × 21 = 84,
12/4 = 12 × 21/4 × 21 = 252/84 - Add the two like fractions:
20/84 + 252/84 = 20 + 252/84 = 272/84 - 272/84 simplified gives 68/21
- So, 5/21 + 12/4 = 68/21
In mixed form: 35/21
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