Subtract 18/30 from 2/4
2/4 - 18/30 is -1/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 30 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 4 × 15 = 60,
2/4 = 2 × 15/4 × 15 = 30/60 - Likewise, for the 2nd fraction, since 30 × 2 = 60,
18/30 = 18 × 2/30 × 2 = 36/60 - Subtract the two like fractions:
30/60 - 36/60 = 30 - 36/60 = -6/60 - 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: 2/4-36/30 2/8-18/30 2/4-18/60 6/4-18/30 2/4-54/30 2/12-18/30 2/4-18/90 10/4-18/30 2/4-90/30 2/20-18/30 14/4-18/30 2/28-18/30