Subtract 35/7 from 80/40
1st number: 2 0/40, 2nd number: 5 0/7
80/40 - 35/7 is -3/1.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 7 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 40 × 7 = 280,
80/40 = 80 × 7/40 × 7 = 560/280 - Likewise, for the 2nd fraction, since 7 × 40 = 280,
35/7 = 35 × 40/7 × 40 = 1400/280 - Subtract the two like fractions:
560/280 - 1400/280 = 560 - 1400/280 = -840/280 - After reducing the fraction, the answer is -3/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/40-70/7 80/40-35/14 80/40-35/21 80/40-35/49