Subtract 10/54 from 12/7, Solve 1 5/7

Subtract 10/54 from 12/7

1^st number: 1 5/7, 2^nd number: 10/54

12/7 - 10/54 is 289/189.

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

Next, find the equivalent fraction of both fractional numbers with denominator 378
For the 1st fraction, since 7 × 54 = 378,
12/7 = 12 × 54/7 × 54 = 648/378
Likewise, for the 2nd fraction, since 54 × 7 = 378,
10/54 = 10 × 7/54 × 7 = 70/378
Subtract the two like fractions:
648/378 - 70/378 = 648 - 70/378 = 578/378
After reducing the fraction, the answer is 289/189
In mixed form: 1100/189

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