Subtract 21/54 from 54/98, Solve 54/98

Subtract 21/54 from 54/98

54/98 - 21/54 is 143/882.

Find the least common denominator or LCM of the two denominators:
LCM of 98 and 54 is 2646

Next, find the equivalent fraction of both fractional numbers with denominator 2646
For the 1st fraction, since 98 × 27 = 2646,
54/98 = 54 × 27/98 × 27 = 1458/2646
Likewise, for the 2nd fraction, since 54 × 49 = 2646,
21/54 = 21 × 49/54 × 49 = 1029/2646
Subtract the two like fractions:
1458/2646 - 1029/2646 = 1458 - 1029/2646 = 429/2646
After reducing the fraction, the answer is 143/882

MathStep (Works offline)

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