Subtract 56/18 from 75/70
1st number: 1 5/70, 2nd number: 3 2/18
75/70 - 56/18 is -257/126.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 18 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 70 × 9 = 630,
75/70 = 75 × 9/70 × 9 = 675/630 - Likewise, for the 2nd fraction, since 18 × 35 = 630,
56/18 = 56 × 35/18 × 35 = 1960/630 - Subtract the two like fractions:
675/630 - 1960/630 = 675 - 1960/630 = -1285/630 - After reducing the fraction, the answer is -257/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 75/70-56/36 75/70-56/54 75/70-56/90