Subtract 20/9 from 4/30
1st number: 4/30, 2nd number: 2 2/9
4/30 - 20/9 is -94/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 9 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 30 × 3 = 90,
4/30 = 4 × 3/30 × 3 = 12/90 - Likewise, for the 2nd fraction, since 9 × 10 = 90,
20/9 = 20 × 10/9 × 10 = 200/90 - Subtract the two like fractions:
12/90 - 200/90 = 12 - 200/90 = -188/90 - After reducing the fraction, the answer is -94/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/30-20/9 4/30-40/9 4/60-20/9 4/30-20/18 12/30-20/9 4/30-60/9 4/90-20/9 4/30-20/27 20/30-20/9 4/30-20/45 28/30-20/9 4/30-20/63