Subtract 90/36 from 45/15
1st number: 3 0/15, 2nd number: 2 18/36
45/15 - 90/36 is 1/2.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 36 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 15 × 12 = 180,
45/15 = 45 × 12/15 × 12 = 540/180 - Likewise, for the 2nd fraction, since 36 × 5 = 180,
90/36 = 90 × 5/36 × 5 = 450/180 - Subtract the two like fractions:
540/180 - 450/180 = 540 - 450/180 = 90/180 - After reducing the fraction, the answer is 1/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/15-90/36 45/30-90/36 45/15-90/72 45/75-90/36