Subtract 9/7 from 10/80
1st number: 10/80, 2nd number: 1 2/7
10/80 - 9/7 is -65/56.
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,
9/7 = 9 × 80/7 × 80 = 720/560 - Subtract the two like fractions:
70/560 - 720/560 = 70 - 720/560 = -650/560 - After reducing the fraction, the answer is -65/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/80-9/7 10/80-18/7 10/80-9/14 30/80-9/7 10/80-27/7 10/80-9/21 50/80-9/7 10/80-45/7 10/80-9/35 70/80-9/7 10/80-63/7 10/80-9/49