Subtract 15/84 from 12/8
1st number: 1 4/8, 2nd number: 15/84
12/8 - 15/84 is 37/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 84 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 8 × 21 = 168,
12/8 = 12 × 21/8 × 21 = 252/168 - Likewise, for the 2nd fraction, since 84 × 2 = 168,
15/84 = 15 × 2/84 × 2 = 30/168 - Subtract the two like fractions:
252/168 - 30/168 = 252 - 30/168 = 222/168 - After reducing the fraction, the answer is 37/28
- In mixed form: 19/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/8-15/84 12/8-30/84 12/16-15/84 36/8-15/84 12/8-45/84 12/24-15/84 60/8-15/84 12/8-75/84 12/40-15/84 84/8-15/84 12/56-15/84