Subtract 48/18 from 75/70
1st number: 1 5/70, 2nd number: 2 12/18
75/70 - 48/18 is -67/42.
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,
48/18 = 48 × 35/18 × 35 = 1680/630 - Subtract the two like fractions:
675/630 - 1680/630 = 675 - 1680/630 = -1005/630 - After reducing the fraction, the answer is -67/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 75/70-96/18 75/70-48/36 75/70-48/54 75/70-48/90