Subtract 4/84 from 1/2
1/2 - 4/84 is 19/42.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 84 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 2 × 42 = 84,
1/2 = 1 × 42/2 × 42 = 42/84 - Likewise, for the 2nd fraction, since 84 × 1 = 84,
4/84 = 4 × 1/84 × 1 = 4/84 - Subtract the two like fractions:
42/84 - 4/84 = 42 - 4/84 = 38/84 - After reducing the fraction, the answer is 19/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 1/2-8/84 1/4-4/84 3/2-4/84 1/2-12/84 1/6-4/84 5/2-4/84 1/2-20/84 1/10-4/84 7/2-4/84 1/2-28/84 1/14-4/84