Subtract 1/70 from 28/18
1st number: 1 10/18, 2nd number: 1/70
28/18 - 1/70 is 971/630.
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,
1/70 = 1 × 9/70 × 9 = 9/630 - Subtract the two like fractions:
980/630 - 9/630 = 980 - 9/630 = 971/630 - In mixed form: 1341/630
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/18-1/70 28/18-2/70 28/36-1/70 84/18-1/70 28/18-3/70 28/54-1/70 28/18-5/70 28/90-1/70 28/18-7/70