Subtract 9/10 from 90/98
90/98 - 9/10 is 9/490.
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,
90/98 = 90 × 5/98 × 5 = 450/490 - Likewise, for the 2nd fraction, since 10 × 49 = 490,
9/10 = 9 × 49/10 × 49 = 441/490 - Subtract the two like fractions:
450/490 - 441/490 = 450 - 441/490 = 9/490
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/98-18/10 90/98-9/20 90/98-27/10 90/98-9/30 90/98-45/10 90/98-9/50 90/98-63/10 90/98-9/70