Subtract 45/70 from 20/5
1st number: 4 0/5, 2nd number: 45/70
20/5 - 45/70 is 47/14.
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,
20/5 = 20 × 14/5 × 14 = 280/70 - Likewise, for the 2nd fraction, since 70 × 1 = 70,
45/70 = 45 × 1/70 × 1 = 45/70 - Subtract the two like fractions:
280/70 - 45/70 = 280 - 45/70 = 235/70 - After reducing the fraction, the answer is 47/14
- In mixed form: 35/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/5-45/70 20/5-90/70 20/10-45/70 60/5-45/70 20/15-45/70 20/25-45/70 20/35-45/70