Subtract 2/40 from 80/70
1st number: 1 10/70, 2nd number: 2/40
80/70 - 2/40 is 153/140.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 70 × 4 = 280,
80/70 = 80 × 4/70 × 4 = 320/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
2/40 = 2 × 7/40 × 7 = 14/280 - Subtract the two like fractions:
320/280 - 14/280 = 320 - 14/280 = 306/280 - After reducing the fraction, the answer is 153/140
- In mixed form: 113/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/70-4/40 80/70-2/80 80/70-6/40 80/70-10/40 80/70-14/40