Add 45/12 and 90/24
1st number: 3 9/12, 2nd number: 3 18/24
45/12 + 90/24 is 15/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 24 is 24
Next, find the equivalent fraction of both fractional numbers with denominator 24 - For the 1st fraction, since 12 × 2 = 24,
45/12 = 45 × 2/12 × 2 = 90/24 - Likewise, for the 2nd fraction, since 24 × 1 = 24,
90/24 = 90 × 1/24 × 1 = 90/24 - Add the two like fractions:
90/24 + 90/24 = 90 + 90/24 = 180/24 - 180/24 simplified gives 15/2
- So, 45/12 + 90/24 = 15/2
In mixed form: 71/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/12+90/24 45/24+90/24 45/12+90/48 45/36+90/24 45/12+90/72 45/60+90/24 45/84+90/24