Subtract 20/63 from 80/45
1st number: 1 35/45, 2nd number: 20/63
80/45 - 20/63 is 92/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 63 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 45 × 7 = 315,
80/45 = 80 × 7/45 × 7 = 560/315 - Likewise, for the 2nd fraction, since 63 × 5 = 315,
20/63 = 20 × 5/63 × 5 = 100/315 - Subtract the two like fractions:
560/315 - 100/315 = 560 - 100/315 = 460/315 - After reducing the fraction, the answer is 92/63
- In mixed form: 129/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/45-40/63 80/90-20/63 80/45-60/63