Subtract 70/63 from 4/30
1st number: 4/30, 2nd number: 1 7/63
4/30 - 70/63 is -44/45.
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,
4/30 = 4 × 21/30 × 21 = 84/630 - Likewise, for the 2nd fraction, since 63 × 10 = 630,
70/63 = 70 × 10/63 × 10 = 700/630 - Subtract the two like fractions:
84/630 - 700/630 = 84 - 700/630 = -616/630 - After reducing the fraction, the answer is -44/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/30-70/63 4/60-70/63 12/30-70/63 4/90-70/63 20/30-70/63 28/30-70/63