Subtract 18/8 from 28/36
1st number: 28/36, 2nd number: 2 2/8
28/36 - 18/8 is -53/36.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 8 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 36 × 2 = 72,
28/36 = 28 × 2/36 × 2 = 56/72 - Likewise, for the 2nd fraction, since 8 × 9 = 72,
18/8 = 18 × 9/8 × 9 = 162/72 - Subtract the two like fractions:
56/72 - 162/72 = 56 - 162/72 = -106/72 - After reducing the fraction, the answer is -53/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/36-18/8 28/36-36/8 28/72-18/8 28/36-18/16 84/36-18/8 28/36-54/8 28/36-18/24 28/36-90/8 28/36-18/40 28/36-18/56