Subtract 84/50 from 7/21
1st number: 7/21, 2nd number: 1 34/50
7/21 - 84/50 is -101/75.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 50 is 1050
Next, find the equivalent fraction of both fractional numbers with denominator 1050 - For the 1st fraction, since 21 × 50 = 1050,
7/21 = 7 × 50/21 × 50 = 350/1050 - Likewise, for the 2nd fraction, since 50 × 21 = 1050,
84/50 = 84 × 21/50 × 21 = 1764/1050 - Subtract the two like fractions:
350/1050 - 1764/1050 = 350 - 1764/1050 = -1414/1050 - After reducing the fraction, the answer is -101/75
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/21-84/50 7/42-84/50 7/63-84/50 35/21-84/50 49/21-84/50