Subtract 90/20 from 14/45
1st number: 14/45, 2nd number: 4 10/20
14/45 - 90/20 is -377/90.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 20 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 45 × 4 = 180,
14/45 = 14 × 4/45 × 4 = 56/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
90/20 = 90 × 9/20 × 9 = 810/180 - Subtract the two like fractions:
56/180 - 810/180 = 56 - 810/180 = -754/180 - After reducing the fraction, the answer is -377/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 28/45-90/20 14/90-90/20 14/45-90/40 42/45-90/20 14/45-90/60 70/45-90/20 98/45-90/20