Subtract 45/20 from 7/75
1st number: 7/75, 2nd number: 2 5/20
7/75 - 45/20 is -647/300.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 20 is 300
Next, find the equivalent fraction of both fractional numbers with denominator 300 - For the 1st fraction, since 75 × 4 = 300,
7/75 = 7 × 4/75 × 4 = 28/300 - Likewise, for the 2nd fraction, since 20 × 15 = 300,
45/20 = 45 × 15/20 × 15 = 675/300 - Subtract the two like fractions:
28/300 - 675/300 = 28 - 675/300 = -647/300
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/75-45/20 7/75-90/20 7/75-45/40 21/75-45/20 7/75-45/60 35/75-45/20 49/75-45/20