Subtract 20/35 from 10/18
10/18 - 20/35 is -1/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 35 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 18 × 35 = 630,
10/18 = 10 × 35/18 × 35 = 350/630 - Likewise, for the 2nd fraction, since 35 × 18 = 630,
20/35 = 20 × 18/35 × 18 = 360/630 - Subtract the two like fractions:
350/630 - 360/630 = 350 - 360/630 = -10/630 - After reducing the fraction, the answer is -1/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/18-20/35 10/18-40/35 10/36-20/35 10/18-20/70 30/18-20/35 10/18-60/35 10/54-20/35 50/18-20/35 10/90-20/35 70/18-20/35