Subtract 10/7 from 63/27, Solve 2 9/27

Subtract 10/7 from 63/27

1^st number: 2 9/27, 2^nd number: 1 3/7

63/27 - 10/7 is 19/21.

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,
63/27 = 63 × 7/27 × 7 = 441/189
Likewise, for the 2nd fraction, since 7 × 27 = 189,
10/7 = 10 × 27/7 × 27 = 270/189
Subtract the two like fractions:
441/189 - 270/189 = 441 - 270/189 = 171/189
After reducing the fraction, the answer is 19/21

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