Subtract 12/84 from 3/8
3/8 - 12/84 is 13/56.
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,
3/8 = 3 × 21/8 × 21 = 63/168 - Likewise, for the 2nd fraction, since 84 × 2 = 168,
12/84 = 12 × 2/84 × 2 = 24/168 - Subtract the two like fractions:
63/168 - 24/168 = 63 - 24/168 = 39/168 - After reducing the fraction, the answer is 13/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/8-12/84 3/8-24/84 3/16-12/84 9/8-12/84 3/8-36/84 3/24-12/84 15/8-12/84 3/8-60/84 3/40-12/84 21/8-12/84 3/56-12/84