Subtract 4/24 from 18/90
18/90 - 4/24 is 1/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 24 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 90 × 4 = 360,
18/90 = 18 × 4/90 × 4 = 72/360 - Likewise, for the 2nd fraction, since 24 × 15 = 360,
4/24 = 4 × 15/24 × 15 = 60/360 - Subtract the two like fractions:
72/360 - 60/360 = 72 - 60/360 = 12/360 - 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: 36/90-4/24 18/90-8/24 18/90-4/48 54/90-4/24 18/90-12/24 18/90-4/72 18/90-20/24 18/90-28/24