Subtract 9/7 from 2/40
1st number: 2/40, 2nd number: 1 2/7
2/40 - 9/7 is -173/140.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 7 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 40 × 7 = 280,
2/40 = 2 × 7/40 × 7 = 14/280 - Likewise, for the 2nd fraction, since 7 × 40 = 280,
9/7 = 9 × 40/7 × 40 = 360/280 - Subtract the two like fractions:
14/280 - 360/280 = 14 - 360/280 = -346/280 - After reducing the fraction, the answer is -173/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/40-9/7 2/40-18/7 2/80-9/7 2/40-9/14 6/40-9/7 2/40-27/7 2/40-9/21 10/40-9/7 2/40-45/7 2/40-9/35 14/40-9/7 2/40-63/7 2/40-9/49