Subtract 8/21 from 24/36
24/36 - 8/21 is 2/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 21 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 36 × 7 = 252,
24/36 = 24 × 7/36 × 7 = 168/252 - Likewise, for the 2nd fraction, since 21 × 12 = 252,
8/21 = 8 × 12/21 × 12 = 96/252 - Subtract the two like fractions:
168/252 - 96/252 = 168 - 96/252 = 72/252 - After reducing the fraction, the answer is 2/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 48/36-8/21 24/36-16/21 24/72-8/21 24/36-8/42 72/36-8/21 24/36-24/21 24/36-8/63 24/36-40/21 24/36-56/21