Subtract 45/8 from 20/75
1st number: 20/75, 2nd number: 5 5/8
20/75 - 45/8 is -643/120.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 8 is 600
Next, find the equivalent fraction of both fractional numbers with denominator 600 - For the 1st fraction, since 75 × 8 = 600,
20/75 = 20 × 8/75 × 8 = 160/600 - Likewise, for the 2nd fraction, since 8 × 75 = 600,
45/8 = 45 × 75/8 × 75 = 3375/600 - Subtract the two like fractions:
160/600 - 3375/600 = 160 - 3375/600 = -3215/600 - After reducing the fraction, the answer is -643/120
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/75-45/8 20/75-90/8 20/75-45/16 60/75-45/8 20/75-45/24 20/75-45/40 20/75-45/56