Subtract 3/27 from 75/21
1st number: 3 12/21, 2nd number: 3/27
75/21 - 3/27 is 218/63.
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,
75/21 = 75 × 9/21 × 9 = 675/189 - Likewise, for the 2nd fraction, since 27 × 7 = 189,
3/27 = 3 × 7/27 × 7 = 21/189 - Subtract the two like fractions:
675/189 - 21/189 = 675 - 21/189 = 654/189 - After reducing the fraction, the answer is 218/63
- In mixed form: 329/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 75/21-6/27 75/42-3/27 75/21-3/54 75/21-9/27 75/63-3/27 75/21-3/81 75/21-15/27 75/21-21/27