Subtract 18/30 from 6/8
6/8 - 18/30 is 3/20.
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,
6/8 = 6 × 15/8 × 15 = 90/120 - Likewise, for the 2nd fraction, since 30 × 4 = 120,
18/30 = 18 × 4/30 × 4 = 72/120 - Subtract the two like fractions:
90/120 - 72/120 = 90 - 72/120 = 18/120 - After reducing the fraction, the answer is 3/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/8-18/30 6/8-36/30 6/16-18/30 6/8-18/60 18/8-18/30 6/8-54/30 6/24-18/30 6/8-18/90 30/8-18/30 6/8-90/30 6/40-18/30 42/8-18/30 6/56-18/30