Subtract 60/18 from 50/45
1st number: 1 5/45, 2nd number: 3 6/18
50/45 - 60/18 is -20/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 18 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 45 × 2 = 90,
50/45 = 50 × 2/45 × 2 = 100/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
60/18 = 60 × 5/18 × 5 = 300/90 - Subtract the two like fractions:
100/90 - 300/90 = 100 - 300/90 = -200/90 - After reducing the fraction, the answer is -20/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/90-60/18 50/45-60/36 50/45-60/54 50/45-60/90