Subtract 45/20 from 70/8
1st number: 8 6/8, 2nd number: 2 5/20
70/8 - 45/20 is 13/2.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 20 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 8 × 5 = 40,
70/8 = 70 × 5/8 × 5 = 350/40 - Likewise, for the 2nd fraction, since 20 × 2 = 40,
45/20 = 45 × 2/20 × 2 = 90/40 - Subtract the two like fractions:
350/40 - 90/40 = 350 - 90/40 = 260/40 - After reducing the fraction, the answer is 13/2
- In mixed form: 61/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/8-90/20 70/16-45/20 70/8-45/40 70/24-45/20 70/8-45/60 70/40-45/20 70/56-45/20