Subtract 12/15 from 7/54
7/54 - 12/15 is -181/270.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 15 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 54 × 5 = 270,
7/54 = 7 × 5/54 × 5 = 35/270 - Likewise, for the 2nd fraction, since 15 × 18 = 270,
12/15 = 12 × 18/15 × 18 = 216/270 - Subtract the two like fractions:
35/270 - 216/270 = 35 - 216/270 = -181/270
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/54-12/15 7/54-24/15 7/54-12/30 21/54-12/15 7/54-36/15 7/54-12/45 35/54-12/15 7/54-60/15 7/54-12/75 49/54-12/15 7/54-84/15