Subtract 12/30 from 9/20
9/20 - 12/30 is 1/20.
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,
9/20 = 9 × 3/20 × 3 = 27/60 - Likewise, for the 2nd fraction, since 30 × 2 = 60,
12/30 = 12 × 2/30 × 2 = 24/60 - Subtract the two like fractions:
27/60 - 24/60 = 27 - 24/60 = 3/60 - After reducing the fraction, the answer is 1/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/20-12/30 9/20-24/30 9/40-12/30 9/20-12/60 27/20-12/30 9/20-36/30 9/60-12/30 9/20-12/90 45/20-12/30 9/20-60/30 63/20-12/30 9/20-84/30