Subtract 5/8 from 30/40
30/40 - 5/8 is 1/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 8 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 40 × 1 = 40,
30/40 = 30 × 1/40 × 1 = 30/40 - Likewise, for the 2nd fraction, since 8 × 5 = 40,
5/8 = 5 × 5/8 × 5 = 25/40 - Subtract the two like fractions:
30/40 - 25/40 = 30 - 25/40 = 5/40 - After reducing the fraction, the answer is 1/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/40-5/8 30/40-10/8 30/80-5/8 30/40-5/16 90/40-5/8 30/40-15/8 30/40-5/24 30/40-25/8 30/40-5/40 30/40-35/8 30/40-5/56