Subtract 24/90 from 18/60
18/60 - 24/90 is 1/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 90 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 60 × 3 = 180,
18/60 = 18 × 3/60 × 3 = 54/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
24/90 = 24 × 2/90 × 2 = 48/180 - Subtract the two like fractions:
54/180 - 48/180 = 54 - 48/180 = 6/180 - After reducing the fraction, the answer is 1/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/60-24/90 18/60-48/90 54/60-24/90 18/60-72/90 90/60-24/90