Add 21/3 and 81/36
1st number: 7 0/3, 2nd number: 2 9/36
21/3 + 81/36 is 37/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 36 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 3 × 12 = 36,
21/3 = 21 × 12/3 × 12 = 252/36 - Likewise, for the 2nd fraction, since 36 × 1 = 36,
81/36 = 81 × 1/36 × 1 = 81/36 - Add the two like fractions:
252/36 + 81/36 = 252 + 81/36 = 333/36 - 333/36 simplified gives 37/4
- So, 21/3 + 81/36 = 37/4
In mixed form: 91/4
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