Subtract 30/36 from 18/8
1st number: 2 2/8, 2nd number: 30/36
18/8 - 30/36 is 17/12.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 36 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 8 × 9 = 72,
18/8 = 18 × 9/8 × 9 = 162/72 - Likewise, for the 2nd fraction, since 36 × 2 = 72,
30/36 = 30 × 2/36 × 2 = 60/72 - Subtract the two like fractions:
162/72 - 60/72 = 162 - 60/72 = 102/72 - After reducing the fraction, the answer is 17/12
- In mixed form: 15/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/8-30/36 18/8-60/36 18/16-30/36 18/8-30/72 54/8-30/36 18/8-90/36 18/24-30/36 90/8-30/36 18/40-30/36 18/56-30/36