Subtract 28/54 from 10/7, Solve 1 3/7

Subtract 28/54 from 10/7

1^st number: 1 3/7, 2^nd number: 28/54

10/7 - 28/54 is 172/189.

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,
10/7 = 10 × 54/7 × 54 = 540/378
Likewise, for the 2nd fraction, since 54 × 7 = 378,
28/54 = 28 × 7/54 × 7 = 196/378
Subtract the two like fractions:
540/378 - 196/378 = 540 - 196/378 = 344/378
After reducing the fraction, the answer is 172/189

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