Subtract 20/90 from 6/35
6/35 - 20/90 is -16/315.
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,
6/35 = 6 × 18/35 × 18 = 108/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
20/90 = 20 × 7/90 × 7 = 140/630 - Subtract the two like fractions:
108/630 - 140/630 = 108 - 140/630 = -32/630 - After reducing the fraction, the answer is -16/315
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/35-20/90 6/35-40/90 6/70-20/90 18/35-20/90 6/35-60/90 30/35-20/90 42/35-20/90