Subtract 75/30 from 8/45
1st number: 8/45, 2nd number: 2 15/30
8/45 - 75/30 is -209/90.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 30 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 45 × 2 = 90,
8/45 = 8 × 2/45 × 2 = 16/90 - Likewise, for the 2nd fraction, since 30 × 3 = 90,
75/30 = 75 × 3/30 × 3 = 225/90 - Subtract the two like fractions:
16/90 - 225/90 = 16 - 225/90 = -209/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/45-75/30 8/90-75/30 8/45-75/60 24/45-75/30 8/45-75/90 40/45-75/30 56/45-75/30