Subtract 10/7 from 40/60
1st number: 40/60, 2nd number: 1 3/7
40/60 - 10/7 is -16/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 7 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 60 × 7 = 420,
40/60 = 40 × 7/60 × 7 = 280/420 - Likewise, for the 2nd fraction, since 7 × 60 = 420,
10/7 = 10 × 60/7 × 60 = 600/420 - Subtract the two like fractions:
280/420 - 600/420 = 280 - 600/420 = -320/420 - After reducing the fraction, the answer is -16/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/60-10/7 40/60-20/7 40/60-10/14 40/60-30/7 40/60-10/21 40/60-50/7 40/60-10/35 40/60-70/7 40/60-10/49