Subtract 70/7 from 7/54, Solve 7/54

Subtract 70/7 from 7/54

1^st number: 7/54, 2^nd number: 10 0/7

7/54 - 70/7 is -533/54.

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,
7/54 = 7 × 7/54 × 7 = 49/378
Likewise, for the 2nd fraction, since 7 × 54 = 378,
70/7 = 70 × 54/7 × 54 = 3780/378
Subtract the two like fractions:
49/378 - 3780/378 = 49 - 3780/378 = -3731/378
After reducing the fraction, the answer is -533/54

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