Add 81/12 and 7/42
1st number: 6 9/12, 2nd number: 7/42
81/12 + 7/42 is 83/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 42 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 12 × 7 = 84,
81/12 = 81 × 7/12 × 7 = 567/84 - Likewise, for the 2nd fraction, since 42 × 2 = 84,
7/42 = 7 × 2/42 × 2 = 14/84 - Add the two like fractions:
567/84 + 14/84 = 567 + 14/84 = 581/84 - 581/84 simplified gives 83/12
- So, 81/12 + 7/42 = 83/12
In mixed form: 611/12
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