Subtract 2/20 from 40/50
40/50 - 2/20 is 7/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 20 is 100
Next, find the equivalent fraction of both fractional numbers with denominator 100 - For the 1st fraction, since 50 × 2 = 100,
40/50 = 40 × 2/50 × 2 = 80/100 - Likewise, for the 2nd fraction, since 20 × 5 = 100,
2/20 = 2 × 5/20 × 5 = 10/100 - Subtract the two like fractions:
80/100 - 10/100 = 80 - 10/100 = 70/100 - After reducing the fraction, the answer is 7/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/50-2/20 40/50-4/20 40/50-2/40 40/50-6/20 40/50-2/60 40/50-10/20 40/50-14/20