Subtract 3/54 from 63/7, Solve 9 0/7

Subtract 3/54 from 63/7

1^st number: 9 0/7, 2^nd number: 3/54

63/7 - 3/54 is 161/18.

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,
63/7 = 63 × 54/7 × 54 = 3402/378
Likewise, for the 2nd fraction, since 54 × 7 = 378,
3/54 = 3 × 7/54 × 7 = 21/378
Subtract the two like fractions:
3402/378 - 21/378 = 3402 - 21/378 = 3381/378
After reducing the fraction, the answer is 161/18
In mixed form: 817/18

MathStep (Works offline)

Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad