Subtract 3/30 from 20/8
1st number: 2 4/8, 2nd number: 3/30
20/8 - 3/30 is 12/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 30 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 8 × 15 = 120,
20/8 = 20 × 15/8 × 15 = 300/120 - Likewise, for the 2nd fraction, since 30 × 4 = 120,
3/30 = 3 × 4/30 × 4 = 12/120 - Subtract the two like fractions:
300/120 - 12/120 = 300 - 12/120 = 288/120 - After reducing the fraction, the answer is 12/5
- In mixed form: 22/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/8-3/30 20/8-6/30 20/16-3/30 20/8-3/60 60/8-3/30 20/8-9/30 20/24-3/30 20/8-3/90 20/8-15/30 20/40-3/30 20/8-21/30 20/56-3/30