Subtract 12/4 from 18/28
1st number: 18/28, 2nd number: 3 0/4
18/28 - 12/4 is -33/14.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 4 is 28
Next, find the equivalent fraction of both fractional numbers with denominator 28 - For the 1st fraction, since 28 × 1 = 28,
18/28 = 18 × 1/28 × 1 = 18/28 - Likewise, for the 2nd fraction, since 4 × 7 = 28,
12/4 = 12 × 7/4 × 7 = 84/28 - Subtract the two like fractions:
18/28 - 84/28 = 18 - 84/28 = -66/28 - After reducing the fraction, the answer is -33/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/28-12/4 18/28-24/4 18/56-12/4 18/28-12/8 54/28-12/4 18/28-36/4 18/84-12/4 90/28-12/4 18/28-60/4 18/28-12/20 18/28-84/4 18/28-12/28