Subtract 45/25 from 8/72
1st number: 8/72, 2nd number: 1 20/25
8/72 - 45/25 is -76/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 25 is 1800
Next, find the equivalent fraction of both fractional numbers with denominator 1800 - For the 1st fraction, since 72 × 25 = 1800,
8/72 = 8 × 25/72 × 25 = 200/1800 - Likewise, for the 2nd fraction, since 25 × 72 = 1800,
45/25 = 45 × 72/25 × 72 = 3240/1800 - Subtract the two like fractions:
200/1800 - 3240/1800 = 200 - 3240/1800 = -3040/1800 - After reducing the fraction, the answer is -76/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/72-45/25 8/72-90/25 8/72-45/50 24/72-45/25 8/72-45/75 40/72-45/25 56/72-45/25