Subtract 18/40 from 70/10
1st number: 7 0/10, 2nd number: 18/40
70/10 - 18/40 is 131/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 40 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 10 × 4 = 40,
70/10 = 70 × 4/10 × 4 = 280/40 - Likewise, for the 2nd fraction, since 40 × 1 = 40,
18/40 = 18 × 1/40 × 1 = 18/40 - Subtract the two like fractions:
280/40 - 18/40 = 280 - 18/40 = 262/40 - After reducing the fraction, the answer is 131/20
- In mixed form: 611/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/10-36/40 70/20-18/40 70/10-18/80 70/10-54/40 70/30-18/40 70/10-90/40 70/50-18/40