Subtract 8/28 from 12/42
12/42 - 8/28 is 0/1.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 28 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 42 × 2 = 84,
12/42 = 12 × 2/42 × 2 = 24/84 - Likewise, for the 2nd fraction, since 28 × 3 = 84,
8/28 = 8 × 3/28 × 3 = 24/84 - Subtract the two like fractions:
24/84 - 24/84 = 24 - 24/84 = 0/84 - The answer is 0
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/42-8/28 12/42-16/28 12/84-8/28 12/42-8/56 36/42-8/28 12/42-24/28 12/42-8/84 60/42-8/28 12/42-40/28 84/42-8/28 12/42-56/28