Subtract 30/70 from 1/9
1/9 - 30/70 is -20/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 70 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 9 × 70 = 630,
1/9 = 1 × 70/9 × 70 = 70/630 - Likewise, for the 2nd fraction, since 70 × 9 = 630,
30/70 = 30 × 9/70 × 9 = 270/630 - Subtract the two like fractions:
70/630 - 270/630 = 70 - 270/630 = -200/630 - After reducing the fraction, the answer is -20/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/9-30/70 1/9-60/70 1/18-30/70 3/9-30/70 1/9-90/70 1/27-30/70 5/9-30/70 1/45-30/70 7/9-30/70 1/63-30/70