Subtract 7/4 from 27/18
1st number: 1 9/18, 2nd number: 1 3/4
27/18 - 7/4 is -1/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 4 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 18 × 2 = 36,
27/18 = 27 × 2/18 × 2 = 54/36 - Likewise, for the 2nd fraction, since 4 × 9 = 36,
7/4 = 7 × 9/4 × 9 = 63/36 - Subtract the two like fractions:
54/36 - 63/36 = 54 - 63/36 = -9/36 - After reducing the fraction, the answer is -1/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/18-7/4 27/18-14/4 27/36-7/4 27/18-7/8 81/18-7/4 27/18-21/4 27/54-7/4 27/18-7/12 27/18-35/4 27/90-7/4 27/18-7/20 27/18-49/4 27/18-7/28