Subtract 20/48 from 35/90
35/90 - 20/48 is -1/36.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 48 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 90 × 8 = 720,
35/90 = 35 × 8/90 × 8 = 280/720 - Likewise, for the 2nd fraction, since 48 × 15 = 720,
20/48 = 20 × 15/48 × 15 = 300/720 - Subtract the two like fractions:
280/720 - 300/720 = 280 - 300/720 = -20/720 - After reducing the fraction, the answer is -1/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/90-20/48 35/90-40/48 35/90-20/96 35/90-60/48