Subtract 9/80 from 12/98
12/98 - 9/80 is 39/3920.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 98 and 80 is 3920
Next, find the equivalent fraction of both fractional numbers with denominator 3920 - For the 1st fraction, since 98 × 40 = 3920,
12/98 = 12 × 40/98 × 40 = 480/3920 - Likewise, for the 2nd fraction, since 80 × 49 = 3920,
9/80 = 9 × 49/80 × 49 = 441/3920 - Subtract the two like fractions:
480/3920 - 441/3920 = 480 - 441/3920 = 39/3920
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/98-9/80 12/98-18/80 36/98-9/80 12/98-27/80 60/98-9/80 12/98-45/80 84/98-9/80 12/98-63/80