Subtract 9/40 from 27/7
1st number: 3 6/7, 2nd number: 9/40
27/7 - 9/40 is 1017/280.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 7 × 40 = 280,
27/7 = 27 × 40/7 × 40 = 1080/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
9/40 = 9 × 7/40 × 7 = 63/280 - Subtract the two like fractions:
1080/280 - 63/280 = 1080 - 63/280 = 1017/280 - In mixed form: 3177/280
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/7-9/40 27/7-18/40 27/14-9/40 27/7-9/80 81/7-9/40 27/7-27/40 27/21-9/40 27/7-45/40 27/35-9/40 27/7-63/40 27/49-9/40