Add 81/2 and 5/45
1st number: 40 1/2, 2nd number: 5/45
81/2 + 5/45 is 731/18.
Steps for adding 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,
5/45 = 5 × 2/45 × 2 = 10/90 - Add the two like fractions:
3645/90 + 10/90 = 3645 + 10/90 = 3655/90 - 3655/90 simplified gives 731/18
- So, 81/2 + 5/45 = 731/18
In mixed form: 4011/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/2+10/45 81/4+5/45 81/2+5/90 81/2+15/45 81/6+5/45 81/2+25/45 81/10+5/45 81/2+35/45 81/14+5/45