Add 21/6 and 81/72
1st number: 3 3/6, 2nd number: 1 9/72
21/6 + 81/72 is 37/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 72 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 6 × 12 = 72,
21/6 = 21 × 12/6 × 12 = 252/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
81/72 = 81 × 1/72 × 1 = 81/72 - Add the two like fractions:
252/72 + 81/72 = 252 + 81/72 = 333/72 - 333/72 simplified gives 37/8
- So, 21/6 + 81/72 = 37/8
In mixed form: 45/8
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