Subtract 15/18 from 72/98
72/98 - 15/18 is -29/294.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 98 and 18 is 882
Next, find the equivalent fraction of both fractional numbers with denominator 882 - For the 1st fraction, since 98 × 9 = 882,
72/98 = 72 × 9/98 × 9 = 648/882 - Likewise, for the 2nd fraction, since 18 × 49 = 882,
15/18 = 15 × 49/18 × 49 = 735/882 - Subtract the two like fractions:
648/882 - 735/882 = 648 - 735/882 = -87/882 - After reducing the fraction, the answer is -29/294
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/98-30/18 72/98-15/36 72/98-45/18 72/98-15/54 72/98-75/18 72/98-15/90