Subtract 70/5 from 45/20
1st number: 2 5/20, 2nd number: 14 0/5
45/20 - 70/5 is -47/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 5 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 20 × 1 = 20,
45/20 = 45 × 1/20 × 1 = 45/20 - Likewise, for the 2nd fraction, since 5 × 4 = 20,
70/5 = 70 × 4/5 × 4 = 280/20 - Subtract the two like fractions:
45/20 - 280/20 = 45 - 280/20 = -235/20 - After reducing the fraction, the answer is -47/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/20-70/5 45/40-70/5 45/20-70/10 45/60-70/5 45/20-70/15 45/20-70/25 45/20-70/35