Subtract 3/90 from 7/24
7/24 - 3/90 is 31/120.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 90 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 24 × 15 = 360,
7/24 = 7 × 15/24 × 15 = 105/360 - Likewise, for the 2nd fraction, since 90 × 4 = 360,
3/90 = 3 × 4/90 × 4 = 12/360 - Subtract the two like fractions:
105/360 - 12/360 = 105 - 12/360 = 93/360 - After reducing the fraction, the answer is 31/120
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/24-3/90 7/24-6/90 7/48-3/90 21/24-3/90 7/24-9/90 7/72-3/90 35/24-3/90 7/24-15/90 49/24-3/90 7/24-21/90