Subtract 63/5 from 81/27, Solve 3 0/27

Subtract 63/5 from 81/27

1^st number: 3 0/27, 2^nd number: 12 3/5

81/27 - 63/5 is -48/5.

Find the least common denominator or LCM of the two denominators:
LCM of 27 and 5 is 135

Next, find the equivalent fraction of both fractional numbers with denominator 135
For the 1st fraction, since 27 × 5 = 135,
81/27 = 81 × 5/27 × 5 = 405/135
Likewise, for the 2nd fraction, since 5 × 27 = 135,
63/5 = 63 × 27/5 × 27 = 1701/135
Subtract the two like fractions:
405/135 - 1701/135 = 405 - 1701/135 = -1296/135
After reducing the fraction, the answer is -48/5

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