Subtract 90/9 from 18/49
1st number: 18/49, 2nd number: 10 0/9
18/49 - 90/9 is -472/49.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 9 is 441
Next, find the equivalent fraction of both fractional numbers with denominator 441 - For the 1st fraction, since 49 × 9 = 441,
18/49 = 18 × 9/49 × 9 = 162/441 - Likewise, for the 2nd fraction, since 9 × 49 = 441,
90/9 = 90 × 49/9 × 49 = 4410/441 - Subtract the two like fractions:
162/441 - 4410/441 = 162 - 4410/441 = -4248/441 - After reducing the fraction, the answer is -472/49
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/49-90/9 18/98-90/9 18/49-90/18 54/49-90/9 18/49-90/27 90/49-90/9 18/49-90/45 18/49-90/63