Subtract 90/20 from 5/3
1st number: 1 2/3, 2nd number: 4 10/20
5/3 - 90/20 is -17/6.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 20 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 3 × 20 = 60,
5/3 = 5 × 20/3 × 20 = 100/60 - Likewise, for the 2nd fraction, since 20 × 3 = 60,
90/20 = 90 × 3/20 × 3 = 270/60 - Subtract the two like fractions:
100/60 - 270/60 = 100 - 270/60 = -170/60 - After reducing the fraction, the answer is -17/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/3-90/20 5/6-90/20 5/3-90/40 15/3-90/20 5/9-90/20 5/3-90/60 25/3-90/20 5/15-90/20 35/3-90/20 5/21-90/20