Subtract 9/40 from 70/4
1st number: 17 2/4, 2nd number: 9/40
70/4 - 9/40 is 691/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 40 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 4 × 10 = 40,
70/4 = 70 × 10/4 × 10 = 700/40 - Likewise, for the 2nd fraction, since 40 × 1 = 40,
9/40 = 9 × 1/40 × 1 = 9/40 - Subtract the two like fractions:
700/40 - 9/40 = 700 - 9/40 = 691/40 - In mixed form: 1711/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/4-18/40 70/8-9/40 70/4-9/80 70/4-27/40 70/12-9/40 70/4-45/40 70/20-9/40 70/4-63/40 70/28-9/40