Subtract 18/70 from 1/63
1/63 - 18/70 is -76/315.
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,
1/63 = 1 × 10/63 × 10 = 10/630 - Likewise, for the 2nd fraction, since 70 × 9 = 630,
18/70 = 18 × 9/70 × 9 = 162/630 - Subtract the two like fractions:
10/630 - 162/630 = 10 - 162/630 = -152/630 - After reducing the fraction, the answer is -76/315
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/63-18/70 1/63-36/70 3/63-18/70 1/63-54/70 5/63-18/70 1/63-90/70 7/63-18/70