Subtract 4/8 from 18/30
18/30 - 4/8 is 1/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 8 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 30 × 4 = 120,
18/30 = 18 × 4/30 × 4 = 72/120 - Likewise, for the 2nd fraction, since 8 × 15 = 120,
4/8 = 4 × 15/8 × 15 = 60/120 - Subtract the two like fractions:
72/120 - 60/120 = 72 - 60/120 = 12/120 - After reducing the fraction, the answer is 1/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/30-4/8 18/60-4/8 18/30-4/16 54/30-4/8 18/30-12/8 18/90-4/8 18/30-4/24 90/30-4/8 18/30-20/8 18/30-4/40 18/30-28/8 18/30-4/56