Subtract 36/16 from 20/90
1st number: 20/90, 2nd number: 2 4/16
20/90 - 36/16 is -73/36.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 16 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 90 × 8 = 720,
20/90 = 20 × 8/90 × 8 = 160/720 - Likewise, for the 2nd fraction, since 16 × 45 = 720,
36/16 = 36 × 45/16 × 45 = 1620/720 - Subtract the two like fractions:
160/720 - 1620/720 = 160 - 1620/720 = -1460/720 - After reducing the fraction, the answer is -73/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/90-36/16 20/90-72/16 20/90-36/32 60/90-36/16 20/90-36/48 20/90-36/80