Subtract 40/7 from 10/80
1st number: 10/80, 2nd number: 5 5/7
10/80 - 40/7 is -313/56.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 7 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 80 × 7 = 560,
10/80 = 10 × 7/80 × 7 = 70/560 - Likewise, for the 2nd fraction, since 7 × 80 = 560,
40/7 = 40 × 80/7 × 80 = 3200/560 - Subtract the two like fractions:
70/560 - 3200/560 = 70 - 3200/560 = -3130/560 - After reducing the fraction, the answer is -313/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/80-40/7 10/80-80/7 10/80-40/14 30/80-40/7 10/80-40/21 50/80-40/7 10/80-40/35 70/80-40/7 10/80-40/49