Subtract 6/7 from 15/27, Solve 15/27

Subtract 6/7 from 15/27

15/27 - 6/7 is -19/63.

Find the least common denominator or LCM of the two denominators:
LCM of 27 and 7 is 189

Next, find the equivalent fraction of both fractional numbers with denominator 189
For the 1st fraction, since 27 × 7 = 189,
15/27 = 15 × 7/27 × 7 = 105/189
Likewise, for the 2nd fraction, since 7 × 27 = 189,
6/7 = 6 × 27/7 × 27 = 162/189
Subtract the two like fractions:
105/189 - 162/189 = 105 - 162/189 = -57/189
After reducing the fraction, the answer is -19/63

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