Subtract 70/63 from 10/30
1st number: 10/30, 2nd number: 1 7/63
10/30 - 70/63 is -7/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 63 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 30 × 21 = 630,
10/30 = 10 × 21/30 × 21 = 210/630 - Likewise, for the 2nd fraction, since 63 × 10 = 630,
70/63 = 70 × 10/63 × 10 = 700/630 - Subtract the two like fractions:
210/630 - 700/630 = 210 - 700/630 = -490/630 - After reducing the fraction, the answer is -7/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/30-70/63 10/60-70/63 10/90-70/63 50/30-70/63 70/30-70/63