Subtract 63/14 from 81/24, Solve 3 9/24

Subtract 63/14 from 81/24

1^st number: 3 9/24, 2^nd number: 4 7/14

81/24 - 63/14 is -9/8.

Find the least common denominator or LCM of the two denominators:
LCM of 24 and 14 is 168

Next, find the equivalent fraction of both fractional numbers with denominator 168
For the 1st fraction, since 24 × 7 = 168,
81/24 = 81 × 7/24 × 7 = 567/168
Likewise, for the 2nd fraction, since 14 × 12 = 168,
63/14 = 63 × 12/14 × 12 = 756/168
Subtract the two like fractions:
567/168 - 756/168 = 567 - 756/168 = -189/168
After reducing the fraction, the answer is -9/8

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