Subtract 18/4 from 30/9
1st number: 3 3/9, 2nd number: 4 2/4
30/9 - 18/4 is -7/6.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 4 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 9 × 4 = 36,
30/9 = 30 × 4/9 × 4 = 120/36 - Likewise, for the 2nd fraction, since 4 × 9 = 36,
18/4 = 18 × 9/4 × 9 = 162/36 - Subtract the two like fractions:
120/36 - 162/36 = 120 - 162/36 = -42/36 - After reducing the fraction, the answer is -7/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/9-18/4 30/9-36/4 30/18-18/4 30/9-18/8 90/9-18/4 30/9-54/4 30/27-18/4 30/9-18/12 30/9-90/4 30/45-18/4 30/9-18/20 30/63-18/4 30/9-18/28