Subtract 8/40 from 12/7
1st number: 1 5/7, 2nd number: 8/40
12/7 - 8/40 is 53/35.
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,
12/7 = 12 × 40/7 × 40 = 480/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
8/40 = 8 × 7/40 × 7 = 56/280 - Subtract the two like fractions:
480/280 - 56/280 = 480 - 56/280 = 424/280 - After reducing the fraction, the answer is 53/35
- In mixed form: 118/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/7-8/40 12/7-16/40 12/14-8/40 12/7-8/80 36/7-8/40 12/7-24/40 12/21-8/40 60/7-8/40 12/35-8/40 84/7-8/40 12/7-56/40 12/49-8/40