Subtract 15/6 from 90/45
1st number: 2 0/45, 2nd number: 2 3/6
90/45 - 15/6 is -1/2.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 6 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 45 × 2 = 90,
90/45 = 90 × 2/45 × 2 = 180/90 - Likewise, for the 2nd fraction, since 6 × 15 = 90,
15/6 = 15 × 15/6 × 15 = 225/90 - Subtract the two like fractions:
180/90 - 225/90 = 180 - 225/90 = -45/90 - 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: 90/45-30/6 90/45-15/12 90/45-45/6 90/45-15/18 90/45-75/6 90/45-15/30 90/45-15/42