Subtract 10/7 from 90/8, Solve 11 2/8

Subtract 10/7 from 90/8

1^st number: 11 2/8, 2^nd number: 1 3/7

90/8 - 10/7 is 275/28.

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

Next, find the equivalent fraction of both fractional numbers with denominator 56
For the 1st fraction, since 8 × 7 = 56,
90/8 = 90 × 7/8 × 7 = 630/56
Likewise, for the 2nd fraction, since 7 × 8 = 56,
10/7 = 10 × 8/7 × 8 = 80/56
Subtract the two like fractions:
630/56 - 80/56 = 630 - 80/56 = 550/56
After reducing the fraction, the answer is 275/28
In mixed form: 923/28

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