Subtract 56/63 from 42/27, Solve 1 15/27

Subtract 56/63 from 42/27

1^st number: 1 15/27, 2^nd number: 56/63

42/27 - 56/63 is 2/3.

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,
42/27 = 42 × 7/27 × 7 = 294/189
Likewise, for the 2nd fraction, since 63 × 3 = 189,
56/63 = 56 × 3/63 × 3 = 168/189
Subtract the two like fractions:
294/189 - 168/189 = 294 - 168/189 = 126/189
After reducing the fraction, the answer is 2/3

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