Subtract 7/30 from 8/20
8/20 - 7/30 is 1/6.
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,
8/20 = 8 × 3/20 × 3 = 24/60 - Likewise, for the 2nd fraction, since 30 × 2 = 60,
7/30 = 7 × 2/30 × 2 = 14/60 - Subtract the two like fractions:
24/60 - 14/60 = 24 - 14/60 = 10/60 - After reducing the fraction, the answer is 1/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/20-7/30 8/20-14/30 8/40-7/30 8/20-7/60 24/20-7/30 8/20-21/30 8/60-7/30 8/20-7/90 40/20-7/30 8/20-35/30 56/20-7/30 8/20-49/30