Subtract 45/24 from 12/84
1st number: 12/84, 2nd number: 1 21/24
12/84 - 45/24 is -97/56.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 24 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 84 × 2 = 168,
12/84 = 12 × 2/84 × 2 = 24/168 - Likewise, for the 2nd fraction, since 24 × 7 = 168,
45/24 = 45 × 7/24 × 7 = 315/168 - Subtract the two like fractions:
24/168 - 315/168 = 24 - 315/168 = -291/168 - After reducing the fraction, the answer is -97/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/84-45/24 12/84-90/24 12/84-45/48 36/84-45/24 12/84-45/72 60/84-45/24