Subtract 90/36 from 45/8
1st number: 5 5/8, 2nd number: 2 18/36
45/8 - 90/36 is 25/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 36 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 8 × 9 = 72,
45/8 = 45 × 9/8 × 9 = 405/72 - Likewise, for the 2nd fraction, since 36 × 2 = 72,
90/36 = 90 × 2/36 × 2 = 180/72 - Subtract the two like fractions:
405/72 - 180/72 = 405 - 180/72 = 225/72 - After reducing the fraction, the answer is 25/8
- In mixed form: 31/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/8-90/36 45/16-90/36 45/8-90/72 45/24-90/36 45/40-90/36 45/56-90/36