Subtract 50/45 from 81/2
1st number: 40 1/2, 2nd number: 1 5/45
81/2 - 50/45 is 709/18.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 45 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 2 × 45 = 90,
81/2 = 81 × 45/2 × 45 = 3645/90 - Likewise, for the 2nd fraction, since 45 × 2 = 90,
50/45 = 50 × 2/45 × 2 = 100/90 - Subtract the two like fractions:
3645/90 - 100/90 = 3645 - 100/90 = 3545/90 - After reducing the fraction, the answer is 709/18
- In mixed form: 397/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/4-50/45 81/2-50/90 81/6-50/45 81/10-50/45 81/14-50/45