Subtract 1/40 from 12/7
1st number: 1 5/7, 2nd number: 1/40
12/7 - 1/40 is 473/280.
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,
12/7 = 12 × 40/7 × 40 = 480/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
1/40 = 1 × 7/40 × 7 = 7/280 - Subtract the two like fractions:
480/280 - 7/280 = 480 - 7/280 = 473/280 - In mixed form: 1193/280
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/7-1/40 12/7-2/40 12/14-1/40 12/7-1/80 36/7-1/40 12/7-3/40 12/21-1/40 60/7-1/40 12/7-5/40 12/35-1/40 84/7-1/40 12/7-7/40 12/49-1/40