Subtract 18/50 from 3/30
3/30 - 18/50 is -13/50.
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,
3/30 = 3 × 5/30 × 5 = 15/150 - Likewise, for the 2nd fraction, since 50 × 3 = 150,
18/50 = 18 × 3/50 × 3 = 54/150 - Subtract the two like fractions:
15/150 - 54/150 = 15 - 54/150 = -39/150 - After reducing the fraction, the answer is -13/50
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/30-18/50 3/30-36/50 3/60-18/50 9/30-18/50 3/30-54/50 3/90-18/50 15/30-18/50 3/30-90/50 21/30-18/50