Subtract 63/7 from 80/20
1st number: 4 0/20, 2nd number: 9 0/7
80/20 - 63/7 is -5/1.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 7 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 20 × 7 = 140,
80/20 = 80 × 7/20 × 7 = 560/140 - Likewise, for the 2nd fraction, since 7 × 20 = 140,
63/7 = 63 × 20/7 × 20 = 1260/140 - Subtract the two like fractions:
560/140 - 1260/140 = 560 - 1260/140 = -700/140 - After reducing the fraction, the answer is -5/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/40-63/7 80/20-63/14 80/60-63/7 80/20-63/21 80/20-63/35 80/20-63/49