Subtract 2/9 from 20/70
20/70 - 2/9 is 4/63.
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,
20/70 = 20 × 9/70 × 9 = 180/630 - Likewise, for the 2nd fraction, since 9 × 70 = 630,
2/9 = 2 × 70/9 × 70 = 140/630 - Subtract the two like fractions:
180/630 - 140/630 = 180 - 140/630 = 40/630 - After reducing the fraction, the answer is 4/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/70-2/9 20/70-4/9 20/70-2/18 60/70-2/9 20/70-6/9 20/70-2/27 20/70-10/9 20/70-2/45 20/70-14/9 20/70-2/63