Subtract 28/18 from 4/30
1st number: 4/30, 2nd number: 1 10/18
4/30 - 28/18 is -64/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 18 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 18 × 5 = 90,
28/18 = 28 × 5/18 × 5 = 140/90 - Subtract the two like fractions:
12/90 - 140/90 = 12 - 140/90 = -128/90 - After reducing the fraction, the answer is -64/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/30-28/18 4/30-56/18 4/60-28/18 4/30-28/36 12/30-28/18 4/30-84/18 4/90-28/18 4/30-28/54 20/30-28/18 4/30-28/90 28/30-28/18