Subtract 50/27 from 25/21
1st number: 1 4/21, 2nd number: 1 23/27
25/21 - 50/27 is -125/189.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 27 is 189
Next, find the equivalent fraction of both fractional numbers with denominator 189 - For the 1st fraction, since 21 × 9 = 189,
25/21 = 25 × 9/21 × 9 = 225/189 - Likewise, for the 2nd fraction, since 27 × 7 = 189,
50/27 = 50 × 7/27 × 7 = 350/189 - Subtract the two like fractions:
225/189 - 350/189 = 225 - 350/189 = -125/189
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/21-50/27 25/42-50/27 25/21-50/54 75/21-50/27 25/63-50/27 25/21-50/81