Subtract 45/30 from 6/20
1st number: 6/20, 2nd number: 1 15/30
6/20 - 45/30 is -6/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 30 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 20 × 3 = 60,
6/20 = 6 × 3/20 × 3 = 18/60 - Likewise, for the 2nd fraction, since 30 × 2 = 60,
45/30 = 45 × 2/30 × 2 = 90/60 - Subtract the two like fractions:
18/60 - 90/60 = 18 - 90/60 = -72/60 - After reducing the fraction, the answer is -6/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/20-45/30 6/20-90/30 6/40-45/30 6/20-45/60 18/20-45/30 6/60-45/30 6/20-45/90 30/20-45/30 42/20-45/30