Add 21/4 and 20/3
1st number: 5 1/4, 2nd number: 6 2/3
21/4 + 20/3 is 143/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 3 is 12
Next, find the equivalent fraction of both fractional numbers with denominator 12 - For the 1st fraction, since 4 × 3 = 12,
21/4 = 21 × 3/4 × 3 = 63/12 - Likewise, for the 2nd fraction, since 3 × 4 = 12,
20/3 = 20 × 4/3 × 4 = 80/12 - Add the two like fractions:
63/12 + 80/12 = 63 + 80/12 = 143/12 - So, 21/4 + 20/3 = 143/12
In mixed form: 1111/12
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