Add 18/2 and 45/90
1st number: 9 0/2, 2nd number: 45/90
18/2 + 45/90 is 19/2.
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,
18/2 = 18 × 45/2 × 45 = 810/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
45/90 = 45 × 1/90 × 1 = 45/90 - Add the two like fractions:
810/90 + 45/90 = 810 + 45/90 = 855/90 - 855/90 simplified gives 19/2
- So, 18/2 + 45/90 = 19/2
In mixed form: 91/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/2+45/90 18/4+45/90 54/2+45/90 18/6+45/90 90/2+45/90 18/10+45/90 18/14+45/90