Subtract 90/24 from 7/72
1st number: 7/72, 2nd number: 3 18/24
7/72 - 90/24 is -263/72.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 24 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 72 × 1 = 72,
7/72 = 7 × 1/72 × 1 = 7/72 - Likewise, for the 2nd fraction, since 24 × 3 = 72,
90/24 = 90 × 3/24 × 3 = 270/72 - Subtract the two like fractions:
7/72 - 270/72 = 7 - 270/72 = -263/72
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/72-90/24 7/72-90/48 21/72-90/24 7/72-90/72 35/72-90/24 49/72-90/24