Subtract 81/7 from 24/36
1st number: 24/36, 2nd number: 11 4/7
24/36 - 81/7 is -229/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 7 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 7 × 36 = 252,
81/7 = 81 × 36/7 × 36 = 2916/252 - Subtract the two like fractions:
168/252 - 2916/252 = 168 - 2916/252 = -2748/252 - After reducing the fraction, the answer is -229/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 48/36-81/7 24/72-81/7 24/36-81/14 72/36-81/7 24/36-81/21 24/36-81/35 24/36-81/49