Subtract 45/36 from 12/90
1st number: 12/90, 2nd number: 1 9/36
12/90 - 45/36 is -67/60.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 36 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 90 × 2 = 180,
12/90 = 12 × 2/90 × 2 = 24/180 - Likewise, for the 2nd fraction, since 36 × 5 = 180,
45/36 = 45 × 5/36 × 5 = 225/180 - Subtract the two like fractions:
24/180 - 225/180 = 24 - 225/180 = -201/180 - After reducing the fraction, the answer is -67/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/90-45/36 12/90-90/36 12/90-45/72 36/90-45/36 60/90-45/36 84/90-45/36