Subtract 90/63 from 6/27, Solve 6/27

Subtract 90/63 from 6/27

1^st number: 6/27, 2^nd number: 1 27/63

6/27 - 90/63 is -76/63.

Find the least common denominator or LCM of the two denominators:
LCM of 27 and 63 is 189

Next, find the equivalent fraction of both fractional numbers with denominator 189
For the 1st fraction, since 27 × 7 = 189,
6/27 = 6 × 7/27 × 7 = 42/189
Likewise, for the 2nd fraction, since 63 × 3 = 189,
90/63 = 90 × 3/63 × 3 = 270/189
Subtract the two like fractions:
42/189 - 270/189 = 42 - 270/189 = -228/189
After reducing the fraction, the answer is -76/63

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