Subtract 30/27 from 12/4
1st number: 3 0/4, 2nd number: 1 3/27
12/4 - 30/27 is 17/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 27 is 108
Next, find the equivalent fraction of both fractional numbers with denominator 108 - For the 1st fraction, since 4 × 27 = 108,
12/4 = 12 × 27/4 × 27 = 324/108 - Likewise, for the 2nd fraction, since 27 × 4 = 108,
30/27 = 30 × 4/27 × 4 = 120/108 - Subtract the two like fractions:
324/108 - 120/108 = 324 - 120/108 = 204/108 - After reducing the fraction, the answer is 17/9
- In mixed form: 18/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/4-30/27 12/4-60/27 12/8-30/27 12/4-30/54 36/4-30/27 12/4-90/27 12/4-30/81 60/4-30/27 12/20-30/27 84/4-30/27 12/28-30/27