Subtract 90/7 from 27/24, Solve 1 3/24

Subtract 90/7 from 27/24

1^st number: 1 3/24, 2^nd number: 12 6/7

27/24 - 90/7 is -657/56.

Find the least common denominator or LCM of the two denominators:
LCM of 24 and 7 is 168

Next, find the equivalent fraction of both fractional numbers with denominator 168
For the 1st fraction, since 24 × 7 = 168,
27/24 = 27 × 7/24 × 7 = 189/168
Likewise, for the 2nd fraction, since 7 × 24 = 168,
90/7 = 90 × 24/7 × 24 = 2160/168
Subtract the two like fractions:
189/168 - 2160/168 = 189 - 2160/168 = -1971/168
After reducing the fraction, the answer is -657/56

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