Subtract 90/60 from 18/2
1st number: 9 0/2, 2nd number: 1 30/60
18/2 - 90/60 is 15/2.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 60 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 2 × 30 = 60,
18/2 = 18 × 30/2 × 30 = 540/60 - Likewise, for the 2nd fraction, since 60 × 1 = 60,
90/60 = 90 × 1/60 × 1 = 90/60 - Subtract the two like fractions:
540/60 - 90/60 = 540 - 90/60 = 450/60 - After reducing the fraction, the answer is 15/2
- In mixed form: 71/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/2-90/60 18/4-90/60 54/2-90/60 18/6-90/60 90/2-90/60 18/10-90/60 18/14-90/60