Subtract 40/7 from 45/25
1st number: 1 20/25, 2nd number: 5 5/7
45/25 - 40/7 is -137/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 7 is 175
Next, find the equivalent fraction of both fractional numbers with denominator 175 - For the 1st fraction, since 25 × 7 = 175,
45/25 = 45 × 7/25 × 7 = 315/175 - Likewise, for the 2nd fraction, since 7 × 25 = 175,
40/7 = 40 × 25/7 × 25 = 1000/175 - Subtract the two like fractions:
315/175 - 1000/175 = 315 - 1000/175 = -685/175 - After reducing the fraction, the answer is -137/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/25-40/7 45/25-80/7 45/50-40/7 45/25-40/14 45/75-40/7 45/25-40/21 45/25-40/35 45/25-40/49