Add 81/2 and 8/45
1st number: 40 1/2, 2nd number: 8/45
81/2 + 8/45 is 3661/90.
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,
8/45 = 8 × 2/45 × 2 = 16/90 - Add the two like fractions:
3645/90 + 16/90 = 3645 + 16/90 = 3661/90 - So, 81/2 + 8/45 = 3661/90
In mixed form: 4061/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/2+16/45 81/4+8/45 81/2+8/90 81/2+24/45 81/6+8/45 81/2+40/45 81/10+8/45 81/2+56/45 81/14+8/45