Subtract 9/81 from 42/7, Solve 6 0/7

Subtract 9/81 from 42/7

1^st number: 6 0/7, 2^nd number: 9/81

42/7 - 9/81 is 53/9.

Find the least common denominator or LCM of the two denominators:
LCM of 7 and 81 is 567

Next, find the equivalent fraction of both fractional numbers with denominator 567
For the 1st fraction, since 7 × 81 = 567,
42/7 = 42 × 81/7 × 81 = 3402/567
Likewise, for the 2nd fraction, since 81 × 7 = 567,
9/81 = 9 × 7/81 × 7 = 63/567
Subtract the two like fractions:
3402/567 - 63/567 = 3402 - 63/567 = 3339/567
After reducing the fraction, the answer is 53/9
In mixed form: 58/9

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