Subtract 75/63 from 7/70
1st number: 7/70, 2nd number: 1 12/63
7/70 - 75/63 is -229/210.
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,
7/70 = 7 × 9/70 × 9 = 63/630 - Likewise, for the 2nd fraction, since 63 × 10 = 630,
75/63 = 75 × 10/63 × 10 = 750/630 - Subtract the two like fractions:
63/630 - 750/630 = 63 - 750/630 = -687/630 - After reducing the fraction, the answer is -229/210
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/70-75/63 21/70-75/63 35/70-75/63 49/70-75/63