Subtract 1/84 from 81/12, Solve 6 9/12

Subtract 1/84 from 81/12

1^st number: 6 9/12, 2^nd number: 1/84

81/12 - 1/84 is 283/42.

Find the least common denominator or LCM of the two denominators:
LCM of 12 and 84 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 84 × 1 = 84,
1/84 = 1 × 1/84 × 1 = 1/84
Subtract the two like fractions:
567/84 - 1/84 = 567 - 1/84 = 566/84
After reducing the fraction, the answer is 283/42
In mixed form: 631/42

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