Subtract 50/72 from 8/18
8/18 - 50/72 is -1/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 72 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 18 × 4 = 72,
8/18 = 8 × 4/18 × 4 = 32/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
50/72 = 50 × 1/72 × 1 = 50/72 - Subtract the two like fractions:
32/72 - 50/72 = 32 - 50/72 = -18/72 - After reducing the fraction, the answer is -1/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/18-50/72 8/36-50/72 24/18-50/72 8/54-50/72 40/18-50/72 8/90-50/72 56/18-50/72