Subtract 42/63 from 20/10
1st number: 2 0/10, 2nd number: 42/63
20/10 - 42/63 is 4/3.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 63 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 10 × 63 = 630,
20/10 = 20 × 63/10 × 63 = 1260/630 - Likewise, for the 2nd fraction, since 63 × 10 = 630,
42/63 = 42 × 10/63 × 10 = 420/630 - Subtract the two like fractions:
1260/630 - 420/630 = 1260 - 420/630 = 840/630 - After reducing the fraction, the answer is 4/3
- In mixed form: 11/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/10-42/63 20/10-84/63 60/10-42/63 20/30-42/63 20/50-42/63 20/70-42/63