Subtract 12/28 from 10/84
10/84 - 12/28 is -13/42.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 28 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 84 × 1 = 84,
10/84 = 10 × 1/84 × 1 = 10/84 - Likewise, for the 2nd fraction, since 28 × 3 = 84,
12/28 = 12 × 3/28 × 3 = 36/84 - Subtract the two like fractions:
10/84 - 36/84 = 10 - 36/84 = -26/84 - After reducing the fraction, the answer is -13/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/84-12/28 10/84-24/28 10/84-12/56 30/84-12/28 10/84-36/28 10/84-12/84 50/84-12/28 10/84-60/28 70/84-12/28 10/84-84/28