Subtract 20/10 from 90/40
1st number: 2 10/40, 2nd number: 2 0/10
90/40 - 20/10 is 1/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 10 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 40 × 1 = 40,
90/40 = 90 × 1/40 × 1 = 90/40 - Likewise, for the 2nd fraction, since 10 × 4 = 40,
20/10 = 20 × 4/10 × 4 = 80/40 - Subtract the two like fractions:
90/40 - 80/40 = 90 - 80/40 = 10/40 - After reducing the fraction, the answer is 1/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/40-40/10 90/80-20/10 90/40-60/10 90/40-20/30 90/40-20/50 90/40-20/70