Subtract 90/21 from 27/96, Solve 27/96

Subtract 90/21 from 27/96

1^st number: 27/96, 2^nd number: 4 6/21

27/96 - 90/21 is -897/224.

Find the least common denominator or LCM of the two denominators:
LCM of 96 and 21 is 672

Next, find the equivalent fraction of both fractional numbers with denominator 672
For the 1st fraction, since 96 × 7 = 672,
27/96 = 27 × 7/96 × 7 = 189/672
Likewise, for the 2nd fraction, since 21 × 32 = 672,
90/21 = 90 × 32/21 × 32 = 2880/672
Subtract the two like fractions:
189/672 - 2880/672 = 189 - 2880/672 = -2691/672
After reducing the fraction, the answer is -897/224

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