Subtract 4/7 from 45/27
1st number: 1 18/27, 2nd number: 4/7
45/27 - 4/7 is 23/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 7 is 189
Next, find the equivalent fraction of both fractional numbers with denominator 189 - For the 1st fraction, since 27 × 7 = 189,
45/27 = 45 × 7/27 × 7 = 315/189 - Likewise, for the 2nd fraction, since 7 × 27 = 189,
4/7 = 4 × 27/7 × 27 = 108/189 - Subtract the two like fractions:
315/189 - 108/189 = 315 - 108/189 = 207/189 - After reducing the fraction, the answer is 23/21
- In mixed form: 12/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/27-4/7 45/27-8/7 45/54-4/7 45/27-4/14 45/27-12/7 45/81-4/7 45/27-4/21 45/27-20/7 45/27-4/35 45/27-28/7 45/27-4/49