Subtract 90/24 from 8/45
1st number: 8/45, 2nd number: 3 18/24
8/45 - 90/24 is -643/180.
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,
8/45 = 8 × 8/45 × 8 = 64/360 - Likewise, for the 2nd fraction, since 24 × 15 = 360,
90/24 = 90 × 15/24 × 15 = 1350/360 - Subtract the two like fractions:
64/360 - 1350/360 = 64 - 1350/360 = -1286/360 - After reducing the fraction, the answer is -643/180
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/45-90/24 8/90-90/24 8/45-90/48 24/45-90/24 8/45-90/72 40/45-90/24 56/45-90/24