Subtract 75/18 from 7/45
1st number: 7/45, 2nd number: 4 3/18
7/45 - 75/18 is -361/90.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 18 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 45 × 2 = 90,
7/45 = 7 × 2/45 × 2 = 14/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
75/18 = 75 × 5/18 × 5 = 375/90 - Subtract the two like fractions:
14/90 - 375/90 = 14 - 375/90 = -361/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/45-75/18 7/90-75/18 7/45-75/36 21/45-75/18 7/45-75/54 35/45-75/18 7/45-75/90 49/45-75/18