Subtract 30/9 from 27/70
1st number: 27/70, 2nd number: 3 3/9
27/70 - 30/9 is -619/210.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 9 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 70 × 9 = 630,
27/70 = 27 × 9/70 × 9 = 243/630 - Likewise, for the 2nd fraction, since 9 × 70 = 630,
30/9 = 30 × 70/9 × 70 = 2100/630 - Subtract the two like fractions:
243/630 - 2100/630 = 243 - 2100/630 = -1857/630 - After reducing the fraction, the answer is -619/210
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/70-30/9 27/70-60/9 27/70-30/18 81/70-30/9 27/70-90/9 27/70-30/27 27/70-30/45 27/70-30/63