Subtract 21/24 from 7/45
7/45 - 21/24 is -259/360.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 24 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 45 × 8 = 360,
7/45 = 7 × 8/45 × 8 = 56/360 - Likewise, for the 2nd fraction, since 24 × 15 = 360,
21/24 = 21 × 15/24 × 15 = 315/360 - Subtract the two like fractions:
56/360 - 315/360 = 56 - 315/360 = -259/360
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/45-21/24 7/45-42/24 7/90-21/24 7/45-21/48 21/45-21/24 7/45-63/24 7/45-21/72 35/45-21/24 49/45-21/24