Subtract 75/30 from 8/18
1st number: 8/18, 2nd number: 2 15/30
8/18 - 75/30 is -37/18.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 30 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 18 × 5 = 90,
8/18 = 8 × 5/18 × 5 = 40/90 - Likewise, for the 2nd fraction, since 30 × 3 = 90,
75/30 = 75 × 3/30 × 3 = 225/90 - Subtract the two like fractions:
40/90 - 225/90 = 40 - 225/90 = -185/90 - After reducing the fraction, the answer is -37/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/18-75/30 8/36-75/30 8/18-75/60 24/18-75/30 8/54-75/30 8/18-75/90 40/18-75/30 8/90-75/30 56/18-75/30