Subtract 20/24 from 35/45
35/45 - 20/24 is -1/18.
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,
35/45 = 35 × 8/45 × 8 = 280/360 - Likewise, for the 2nd fraction, since 24 × 15 = 360,
20/24 = 20 × 15/24 × 15 = 300/360 - Subtract the two like fractions:
280/360 - 300/360 = 280 - 300/360 = -20/360 - After reducing the fraction, the answer is -1/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/45-20/24 35/45-40/24 35/90-20/24 35/45-20/48 35/45-60/24 35/45-20/72