Subtract 70/40 from 45/2
1st number: 22 1/2, 2nd number: 1 30/40
45/2 - 70/40 is 83/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 40 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 2 × 20 = 40,
45/2 = 45 × 20/2 × 20 = 900/40 - Likewise, for the 2nd fraction, since 40 × 1 = 40,
70/40 = 70 × 1/40 × 1 = 70/40 - Subtract the two like fractions:
900/40 - 70/40 = 900 - 70/40 = 830/40 - After reducing the fraction, the answer is 83/4
- In mixed form: 203/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/2-70/40 45/4-70/40 45/2-70/80 45/6-70/40 45/10-70/40 45/14-70/40