Subtract 90/20 from 6/40
1st number: 6/40, 2nd number: 4 10/20
6/40 - 90/20 is -87/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 20 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 40 × 1 = 40,
6/40 = 6 × 1/40 × 1 = 6/40 - Likewise, for the 2nd fraction, since 20 × 2 = 40,
90/20 = 90 × 2/20 × 2 = 180/40 - Subtract the two like fractions:
6/40 - 180/40 = 6 - 180/40 = -174/40 - After reducing the fraction, the answer is -87/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/40-90/20 6/80-90/20 6/40-90/40 18/40-90/20 6/40-90/60 30/40-90/20 42/40-90/20