Subtract 30/12 from 7/54
1st number: 7/54, 2nd number: 2 6/12
7/54 - 30/12 is -64/27.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 12 is 108
Next, find the equivalent fraction of both fractional numbers with denominator 108 - For the 1st fraction, since 54 × 2 = 108,
7/54 = 7 × 2/54 × 2 = 14/108 - Likewise, for the 2nd fraction, since 12 × 9 = 108,
30/12 = 30 × 9/12 × 9 = 270/108 - Subtract the two like fractions:
14/108 - 270/108 = 14 - 270/108 = -256/108 - After reducing the fraction, the answer is -64/27
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/54-30/12 7/54-60/12 7/54-30/24 21/54-30/12 7/54-90/12 7/54-30/36 35/54-30/12 7/54-30/60 49/54-30/12 7/54-30/84