Subtract 5/90 from 20/35
20/35 - 5/90 is 65/126.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 90 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 35 × 18 = 630,
20/35 = 20 × 18/35 × 18 = 360/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
5/90 = 5 × 7/90 × 7 = 35/630 - Subtract the two like fractions:
360/630 - 35/630 = 360 - 35/630 = 325/630 - After reducing the fraction, the answer is 65/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/35-5/90 20/35-10/90 20/70-5/90 60/35-5/90 20/35-15/90 20/35-25/90 20/35-35/90