Subtract 63/70 from 20/8
1st number: 2 4/8, 2nd number: 63/70
20/8 - 63/70 is 8/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 70 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 8 × 35 = 280,
20/8 = 20 × 35/8 × 35 = 700/280 - Likewise, for the 2nd fraction, since 70 × 4 = 280,
63/70 = 63 × 4/70 × 4 = 252/280 - Subtract the two like fractions:
700/280 - 252/280 = 700 - 252/280 = 448/280 - After reducing the fraction, the answer is 8/5
- In mixed form: 13/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/8-63/70 20/16-63/70 60/8-63/70 20/24-63/70 20/40-63/70 20/56-63/70