Subtract 45/72 from 7/75
7/75 - 45/72 is -319/600.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 72 is 1800
Next, find the equivalent fraction of both fractional numbers with denominator 1800 - For the 1st fraction, since 75 × 24 = 1800,
7/75 = 7 × 24/75 × 24 = 168/1800 - Likewise, for the 2nd fraction, since 72 × 25 = 1800,
45/72 = 45 × 25/72 × 25 = 1125/1800 - Subtract the two like fractions:
168/1800 - 1125/1800 = 168 - 1125/1800 = -957/1800 - After reducing the fraction, the answer is -319/600
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/75-45/72 7/75-90/72 21/75-45/72 35/75-45/72 49/75-45/72