Subtract 18/70 from 56/63
56/63 - 18/70 is 199/315.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 70 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 63 × 10 = 630,
56/63 = 56 × 10/63 × 10 = 560/630 - Likewise, for the 2nd fraction, since 70 × 9 = 630,
18/70 = 18 × 9/70 × 9 = 162/630 - Subtract the two like fractions:
560/630 - 162/630 = 560 - 162/630 = 398/630 - After reducing the fraction, the answer is 199/315
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/63-36/70 56/63-54/70 56/63-90/70