Subtract 63/98 from 27/72, Solve 27/72

Subtract 63/98 from 27/72

27/72 - 63/98 is -15/56.

Find the least common denominator or LCM of the two denominators:
LCM of 72 and 98 is 3528

Next, find the equivalent fraction of both fractional numbers with denominator 3528
For the 1st fraction, since 72 × 49 = 3528,
27/72 = 27 × 49/72 × 49 = 1323/3528
Likewise, for the 2nd fraction, since 98 × 36 = 3528,
63/98 = 63 × 36/98 × 36 = 2268/3528
Subtract the two like fractions:
1323/3528 - 2268/3528 = 1323 - 2268/3528 = -945/3528
After reducing the fraction, the answer is -15/56

MathStep (Works offline)

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