Subtract 70/50 from 18/10
1st number: 1 8/10, 2nd number: 1 20/50
18/10 - 70/50 is 2/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 50 is 50
Next, find the equivalent fraction of both fractional numbers with denominator 50 - For the 1st fraction, since 10 × 5 = 50,
18/10 = 18 × 5/10 × 5 = 90/50 - Likewise, for the 2nd fraction, since 50 × 1 = 50,
70/50 = 70 × 1/50 × 1 = 70/50 - Subtract the two like fractions:
90/50 - 70/50 = 90 - 70/50 = 20/50 - After reducing the fraction, the answer is 2/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/10-70/50 18/20-70/50 54/10-70/50 18/30-70/50 90/10-70/50 18/50-70/50 18/70-70/50