Subtract 42/70 from 56/18
1st number: 3 2/18, 2nd number: 42/70
56/18 - 42/70 is 113/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 70 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 18 × 35 = 630,
56/18 = 56 × 35/18 × 35 = 1960/630 - Likewise, for the 2nd fraction, since 70 × 9 = 630,
42/70 = 42 × 9/70 × 9 = 378/630 - Subtract the two like fractions:
1960/630 - 378/630 = 1960 - 378/630 = 1582/630 - After reducing the fraction, the answer is 113/45
- In mixed form: 223/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/18-84/70 56/36-42/70 56/54-42/70 56/90-42/70