Subtract 75/70 from 8/80
1st number: 8/80, 2nd number: 1 5/70
8/80 - 75/70 is -34/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 70 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 80 × 7 = 560,
8/80 = 8 × 7/80 × 7 = 56/560 - Likewise, for the 2nd fraction, since 70 × 8 = 560,
75/70 = 75 × 8/70 × 8 = 600/560 - Subtract the two like fractions:
56/560 - 600/560 = 56 - 600/560 = -544/560 - After reducing the fraction, the answer is -34/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/80-75/70 24/80-75/70 40/80-75/70 56/80-75/70