Subtract 20/8 from 30/4
1st number: 7 2/4, 2nd number: 2 4/8
30/4 - 20/8 is 5/1.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 8 is 8
Next, find the equivalent fraction of both fractional numbers with denominator 8 - For the 1st fraction, since 4 × 2 = 8,
30/4 = 30 × 2/4 × 2 = 60/8 - Likewise, for the 2nd fraction, since 8 × 1 = 8,
20/8 = 20 × 1/8 × 1 = 20/8 - Subtract the two like fractions:
60/8 - 20/8 = 60 - 20/8 = 40/8 - After reducing the fraction, the answer is 5/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/4-20/8 30/4-40/8 30/8-20/8 30/4-20/16 90/4-20/8 30/4-60/8 30/12-20/8 30/4-20/24 30/20-20/8 30/4-20/40 30/28-20/8 30/4-20/56