Add 12/3 and 45/90
1st number: 4 0/3, 2nd number: 45/90
12/3 + 45/90 is 9/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 3 × 30 = 90,
12/3 = 12 × 30/3 × 30 = 360/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
45/90 = 45 × 1/90 × 1 = 45/90 - Add the two like fractions:
360/90 + 45/90 = 360 + 45/90 = 405/90 - 405/90 simplified gives 9/2
- So, 12/3 + 45/90 = 9/2
In mixed form: 41/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/3+45/90 12/6+45/90 36/3+45/90 12/9+45/90 60/3+45/90 12/15+45/90 84/3+45/90 12/21+45/90