Subtract 20/63 from 63/70
63/70 - 20/63 is 367/630.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 63 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 70 × 9 = 630,
63/70 = 63 × 9/70 × 9 = 567/630 - Likewise, for the 2nd fraction, since 63 × 10 = 630,
20/63 = 20 × 10/63 × 10 = 200/630 - Subtract the two like fractions:
567/630 - 200/630 = 567 - 200/630 = 367/630
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/70-40/63 63/70-60/63