Subtract 2/8 from 81/7, Solve 11 4/7

Subtract 2/8 from 81/7

1^st number: 11 4/7, 2^nd number: 2/8

81/7 - 2/8 is 317/28.

Find the least common denominator or LCM of the two denominators:
LCM of 7 and 8 is 56

Next, find the equivalent fraction of both fractional numbers with denominator 56
For the 1st fraction, since 7 × 8 = 56,
81/7 = 81 × 8/7 × 8 = 648/56
Likewise, for the 2nd fraction, since 8 × 7 = 56,
2/8 = 2 × 7/8 × 7 = 14/56
Subtract the two like fractions:
648/56 - 14/56 = 648 - 14/56 = 634/56
After reducing the fraction, the answer is 317/28
In mixed form: 119/28

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