Subtract 15/10 from 18/98
1st number: 18/98, 2nd number: 1 5/10
18/98 - 15/10 is -129/98.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 98 and 10 is 490
Next, find the equivalent fraction of both fractional numbers with denominator 490 - For the 1st fraction, since 98 × 5 = 490,
18/98 = 18 × 5/98 × 5 = 90/490 - Likewise, for the 2nd fraction, since 10 × 49 = 490,
15/10 = 15 × 49/10 × 49 = 735/490 - Subtract the two like fractions:
90/490 - 735/490 = 90 - 735/490 = -645/490 - After reducing the fraction, the answer is -129/98
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/98-15/10 18/98-30/10 18/98-15/20 54/98-15/10 18/98-45/10 18/98-15/30 90/98-15/10 18/98-75/10 18/98-15/50 18/98-15/70