Subtract 80/7 from 30/80
1st number: 30/80, 2nd number: 11 3/7
30/80 - 80/7 is -619/56.
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,
30/80 = 30 × 7/80 × 7 = 210/560 - Likewise, for the 2nd fraction, since 7 × 80 = 560,
80/7 = 80 × 80/7 × 80 = 6400/560 - Subtract the two like fractions:
210/560 - 6400/560 = 210 - 6400/560 = -6190/560 - After reducing the fraction, the answer is -619/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/80-80/7 30/80-80/14 90/80-80/7 30/80-80/21 30/80-80/35 30/80-80/49