Subtract 2/16 from 20/90
20/90 - 2/16 is 7/72.
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,
2/16 = 2 × 45/16 × 45 = 90/720 - Subtract the two like fractions:
160/720 - 90/720 = 160 - 90/720 = 70/720 - After reducing the fraction, the answer is 7/72
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/90-2/16 20/90-4/16 20/90-2/32 60/90-2/16 20/90-6/16 20/90-2/48 20/90-10/16 20/90-2/80 20/90-14/16