Subtract 18/8 from 3/5
1st number: 3/5, 2nd number: 2 2/8
3/5 - 18/8 is -33/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 8 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 5 × 8 = 40,
3/5 = 3 × 8/5 × 8 = 24/40 - Likewise, for the 2nd fraction, since 8 × 5 = 40,
18/8 = 18 × 5/8 × 5 = 90/40 - Subtract the two like fractions:
24/40 - 90/40 = 24 - 90/40 = -66/40 - After reducing the fraction, the answer is -33/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/5-18/8 3/5-36/8 3/10-18/8 3/5-18/16 9/5-18/8 3/5-54/8 3/15-18/8 3/5-18/24 15/5-18/8 3/5-90/8 3/25-18/8 3/5-18/40 21/5-18/8 3/35-18/8 3/5-18/56