Subtract 90/49 from 4/18
1st number: 4/18, 2nd number: 1 41/49
4/18 - 90/49 is -712/441.
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,
4/18 = 4 × 49/18 × 49 = 196/882 - Likewise, for the 2nd fraction, since 49 × 18 = 882,
90/49 = 90 × 18/49 × 18 = 1620/882 - Subtract the two like fractions:
196/882 - 1620/882 = 196 - 1620/882 = -1424/882 - After reducing the fraction, the answer is -712/441
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/18-90/49 4/36-90/49 4/18-90/98 12/18-90/49 4/54-90/49 20/18-90/49 4/90-90/49 28/18-90/49