Subtract 3/50 from 18/30
18/30 - 3/50 is 27/50.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 50 is 150
Next, find the equivalent fraction of both fractional numbers with denominator 150 - For the 1st fraction, since 30 × 5 = 150,
18/30 = 18 × 5/30 × 5 = 90/150 - Likewise, for the 2nd fraction, since 50 × 3 = 150,
3/50 = 3 × 3/50 × 3 = 9/150 - Subtract the two like fractions:
90/150 - 9/150 = 90 - 9/150 = 81/150 - After reducing the fraction, the answer is 27/50
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/30-3/50 18/30-6/50 18/60-3/50 54/30-3/50 18/30-9/50 18/90-3/50 90/30-3/50 18/30-15/50 18/30-21/50