Subtract 3/27 from 18/7
1st number: 2 4/7, 2nd number: 3/27
18/7 - 3/27 is 155/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 27 is 189
Next, find the equivalent fraction of both fractional numbers with denominator 189 - For the 1st fraction, since 7 × 27 = 189,
18/7 = 18 × 27/7 × 27 = 486/189 - Likewise, for the 2nd fraction, since 27 × 7 = 189,
3/27 = 3 × 7/27 × 7 = 21/189 - Subtract the two like fractions:
486/189 - 21/189 = 486 - 21/189 = 465/189 - After reducing the fraction, the answer is 155/63
- In mixed form: 229/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/7-3/27 18/7-6/27 18/14-3/27 18/7-3/54 54/7-3/27 18/7-9/27 18/21-3/27 18/7-3/81 90/7-3/27 18/7-15/27 18/35-3/27 18/7-21/27 18/49-3/27