Subtract 50/84 from 10/42
10/42 - 50/84 is -5/14.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 84 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 42 × 2 = 84,
10/42 = 10 × 2/42 × 2 = 20/84 - Likewise, for the 2nd fraction, since 84 × 1 = 84,
50/84 = 50 × 1/84 × 1 = 50/84 - Subtract the two like fractions:
20/84 - 50/84 = 20 - 50/84 = -30/84 - After reducing the fraction, the answer is -5/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/42-50/84 10/84-50/84 30/42-50/84 50/42-50/84 70/42-50/84