Subtract 80/70 from 7/5
1st number: 1 2/5, 2nd number: 1 10/70
7/5 - 80/70 is 9/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 70 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 5 × 14 = 70,
7/5 = 7 × 14/5 × 14 = 98/70 - Likewise, for the 2nd fraction, since 70 × 1 = 70,
80/70 = 80 × 1/70 × 1 = 80/70 - Subtract the two like fractions:
98/70 - 80/70 = 98 - 80/70 = 18/70 - After reducing the fraction, the answer is 9/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/5-80/70 7/10-80/70 21/5-80/70 7/15-80/70 35/5-80/70 7/25-80/70 49/5-80/70 7/35-80/70