Subtract 28/63 from 63/70
63/70 - 28/63 is 41/90.
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,
28/63 = 28 × 10/63 × 10 = 280/630 - Subtract the two like fractions:
567/630 - 280/630 = 567 - 280/630 = 287/630 - After reducing the fraction, the answer is 41/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/70-56/63 63/70-84/63