Subtract 70/63 from 6/27, Solve 6/27

Subtract 70/63 from 6/27

1^st number: 6/27, 2^nd number: 1 7/63

6/27 - 70/63 is -8/9.

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,
70/63 = 70 × 3/63 × 3 = 210/189
Subtract the two like fractions:
42/189 - 210/189 = 42 - 210/189 = -168/189
After reducing the fraction, the answer is -8/9

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