Subtract 75/70 from 28/18
1st number: 1 10/18, 2nd number: 1 5/70
28/18 - 75/70 is 61/126.
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,
28/18 = 28 × 35/18 × 35 = 980/630 - Likewise, for the 2nd fraction, since 70 × 9 = 630,
75/70 = 75 × 9/70 × 9 = 675/630 - Subtract the two like fractions:
980/630 - 675/630 = 980 - 675/630 = 305/630 - After reducing the fraction, the answer is 61/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/18-75/70 28/36-75/70 84/18-75/70 28/54-75/70 28/90-75/70