Subtract 50/75 from 4/84
4/84 - 50/75 is -13/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 75 is 2100
Next, find the equivalent fraction of both fractional numbers with denominator 2100 - For the 1st fraction, since 84 × 25 = 2100,
4/84 = 4 × 25/84 × 25 = 100/2100 - Likewise, for the 2nd fraction, since 75 × 28 = 2100,
50/75 = 50 × 28/75 × 28 = 1400/2100 - Subtract the two like fractions:
100/2100 - 1400/2100 = 100 - 1400/2100 = -1300/2100 - After reducing the fraction, the answer is -13/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/84-50/75 12/84-50/75 20/84-50/75 28/84-50/75