Subtract 10/7 from 63/54, Solve 1 9/54

Subtract 10/7 from 63/54

1^st number: 1 9/54, 2^nd number: 1 3/7

63/54 - 10/7 is -11/42.

Find the least common denominator or LCM of the two denominators:
LCM of 54 and 7 is 378

Next, find the equivalent fraction of both fractional numbers with denominator 378
For the 1st fraction, since 54 × 7 = 378,
63/54 = 63 × 7/54 × 7 = 441/378
Likewise, for the 2nd fraction, since 7 × 54 = 378,
10/7 = 10 × 54/7 × 54 = 540/378
Subtract the two like fractions:
441/378 - 540/378 = 441 - 540/378 = -99/378
After reducing the fraction, the answer is -11/42

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