Subtract 90/98 from 9/56
9/56 - 90/98 is -297/392.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 98 is 392
Next, find the equivalent fraction of both fractional numbers with denominator 392 - For the 1st fraction, since 56 × 7 = 392,
9/56 = 9 × 7/56 × 7 = 63/392 - Likewise, for the 2nd fraction, since 98 × 4 = 392,
90/98 = 90 × 4/98 × 4 = 360/392 - Subtract the two like fractions:
63/392 - 360/392 = 63 - 360/392 = -297/392
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/56-90/98 27/56-90/98 45/56-90/98 63/56-90/98