Subtract 60/30 from 70/63
1st number: 1 7/63, 2nd number: 2 0/30
70/63 - 60/30 is -8/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 30 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 63 × 10 = 630,
70/63 = 70 × 10/63 × 10 = 700/630 - Likewise, for the 2nd fraction, since 30 × 21 = 630,
60/30 = 60 × 21/30 × 21 = 1260/630 - Subtract the two like fractions:
700/630 - 1260/630 = 700 - 1260/630 = -560/630 - After reducing the fraction, the answer is -8/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/63-60/90