Subtract 8/63 from 20/40
20/40 - 8/63 is 47/126.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 63 is 2520
Next, find the equivalent fraction of both fractional numbers with denominator 2520 - For the 1st fraction, since 40 × 63 = 2520,
20/40 = 20 × 63/40 × 63 = 1260/2520 - Likewise, for the 2nd fraction, since 63 × 40 = 2520,
8/63 = 8 × 40/63 × 40 = 320/2520 - Subtract the two like fractions:
1260/2520 - 320/2520 = 1260 - 320/2520 = 940/2520 - After reducing the fraction, the answer is 47/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/40-16/63 20/80-8/63 60/40-8/63 20/40-24/63 20/40-40/63 20/40-56/63