Subtract 2/50 from 21/84
21/84 - 2/50 is 21/100.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 50 is 2100
Next, find the equivalent fraction of both fractional numbers with denominator 2100 - For the 1st fraction, since 84 × 25 = 2100,
21/84 = 21 × 25/84 × 25 = 525/2100 - Likewise, for the 2nd fraction, since 50 × 42 = 2100,
2/50 = 2 × 42/50 × 42 = 84/2100 - Subtract the two like fractions:
525/2100 - 84/2100 = 525 - 84/2100 = 441/2100 - After reducing the fraction, the answer is 21/100
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/84-2/50 21/84-4/50 63/84-2/50 21/84-6/50 21/84-10/50 21/84-14/50