Subtract 80/49 from 90/18
1st number: 5 0/18, 2nd number: 1 31/49
90/18 - 80/49 is 165/49.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 49 is 882
Next, find the equivalent fraction of both fractional numbers with denominator 882 - For the 1st fraction, since 18 × 49 = 882,
90/18 = 90 × 49/18 × 49 = 4410/882 - Likewise, for the 2nd fraction, since 49 × 18 = 882,
80/49 = 80 × 18/49 × 18 = 1440/882 - Subtract the two like fractions:
4410/882 - 1440/882 = 4410 - 1440/882 = 2970/882 - After reducing the fraction, the answer is 165/49
- In mixed form: 318/49
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/36-80/49 90/18-80/98 90/54-80/49