Subtract 25/63 from 15/70
15/70 - 25/63 is -23/126.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 63 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 70 × 9 = 630,
15/70 = 15 × 9/70 × 9 = 135/630 - Likewise, for the 2nd fraction, since 63 × 10 = 630,
25/63 = 25 × 10/63 × 10 = 250/630 - Subtract the two like fractions:
135/630 - 250/630 = 135 - 250/630 = -115/630 - After reducing the fraction, the answer is -23/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/70-25/63 15/70-50/63 45/70-25/63 15/70-75/63 75/70-25/63