Subtract 4/9 from 18/30
18/30 - 4/9 is 7/45.
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,
18/30 = 18 × 3/30 × 3 = 54/90 - Likewise, for the 2nd fraction, since 9 × 10 = 90,
4/9 = 4 × 10/9 × 10 = 40/90 - Subtract the two like fractions:
54/90 - 40/90 = 54 - 40/90 = 14/90 - After reducing the fraction, the answer is 7/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/30-4/9 18/30-8/9 18/60-4/9 18/30-4/18 54/30-4/9 18/30-12/9 18/90-4/9 18/30-4/27 90/30-4/9 18/30-20/9 18/30-4/45 18/30-28/9 18/30-4/63