Subtract 20/18 from 4/49
1st number: 4/49, 2nd number: 1 2/18
4/49 - 20/18 is -454/441.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 18 is 882
Next, find the equivalent fraction of both fractional numbers with denominator 882 - For the 1st fraction, since 49 × 18 = 882,
4/49 = 4 × 18/49 × 18 = 72/882 - Likewise, for the 2nd fraction, since 18 × 49 = 882,
20/18 = 20 × 49/18 × 49 = 980/882 - Subtract the two like fractions:
72/882 - 980/882 = 72 - 980/882 = -908/882 - After reducing the fraction, the answer is -454/441
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/49-20/18 4/49-40/18 4/98-20/18 4/49-20/36 12/49-20/18 4/49-60/18 4/49-20/54 20/49-20/18 4/49-20/90 28/49-20/18