Subtract 90/18 from 3/2
1st number: 1 1/2, 2nd number: 5 0/18
3/2 - 90/18 is -7/2.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 18 is 18
Next, find the equivalent fraction of both fractional numbers with denominator 18 - For the 1st fraction, since 2 × 9 = 18,
3/2 = 3 × 9/2 × 9 = 27/18 - Likewise, for the 2nd fraction, since 18 × 1 = 18,
90/18 = 90 × 1/18 × 1 = 90/18 - Subtract the two like fractions:
27/18 - 90/18 = 27 - 90/18 = -63/18 - After reducing the fraction, the answer is -7/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/2-90/18 3/4-90/18 3/2-90/36 9/2-90/18 3/6-90/18 3/2-90/54 15/2-90/18 3/10-90/18 21/2-90/18 3/14-90/18