Subtract 70/20 from 4/9
1st number: 4/9, 2nd number: 3 10/20
4/9 - 70/20 is -55/18.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 20 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 9 × 20 = 180,
4/9 = 4 × 20/9 × 20 = 80/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
70/20 = 70 × 9/20 × 9 = 630/180 - Subtract the two like fractions:
80/180 - 630/180 = 80 - 630/180 = -550/180 - After reducing the fraction, the answer is -55/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/9-70/20 4/18-70/20 4/9-70/40 12/9-70/20 4/27-70/20 4/9-70/60 20/9-70/20 4/45-70/20 28/9-70/20 4/63-70/20