Subtract 98/63 from 10/15, Solve 10/15

Subtract 98/63 from 10/15

1^st number: 10/15, 2^nd number: 1 35/63

10/15 - 98/63 is -8/9.

Find the least common denominator or LCM of the two denominators:
LCM of 15 and 63 is 315

Next, find the equivalent fraction of both fractional numbers with denominator 315
For the 1st fraction, since 15 × 21 = 315,
10/15 = 10 × 21/15 × 21 = 210/315
Likewise, for the 2nd fraction, since 63 × 5 = 315,
98/63 = 98 × 5/63 × 5 = 490/315
Subtract the two like fractions:
210/315 - 490/315 = 210 - 490/315 = -280/315
After reducing the fraction, the answer is -8/9

MathStep (Works offline)

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