Add 81/2 and 5/90
1st number: 40 1/2, 2nd number: 5/90
81/2 + 5/90 is 365/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 90 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 90 × 1 = 90,
5/90 = 5 × 1/90 × 1 = 5/90 - Add the two like fractions:
3645/90 + 5/90 = 3645 + 5/90 = 3650/90 - 3650/90 simplified gives 365/9
- So, 81/2 + 5/90 = 365/9
In mixed form: 405/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/2+10/90 81/4+5/90 81/2+15/90 81/6+5/90 81/2+25/90 81/10+5/90 81/2+35/90 81/14+5/90