Subtract 90/49 from 7/9
1st number: 7/9, 2nd number: 1 41/49
7/9 - 90/49 is -467/441.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 49 is 441
Next, find the equivalent fraction of both fractional numbers with denominator 441 - For the 1st fraction, since 9 × 49 = 441,
7/9 = 7 × 49/9 × 49 = 343/441 - Likewise, for the 2nd fraction, since 49 × 9 = 441,
90/49 = 90 × 9/49 × 9 = 810/441 - Subtract the two like fractions:
343/441 - 810/441 = 343 - 810/441 = -467/441
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/9-90/49 7/18-90/49 7/9-90/98 21/9-90/49 7/27-90/49 35/9-90/49 7/45-90/49 49/9-90/49 7/63-90/49