Add 9/12 and 90/9
1st number: 9/12, 2nd number: 10 0/9
9/12 + 90/9 is 43/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 9 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 12 × 3 = 36,
9/12 = 9 × 3/12 × 3 = 27/36 - Likewise, for the 2nd fraction, since 9 × 4 = 36,
90/9 = 90 × 4/9 × 4 = 360/36 - Add the two like fractions:
27/36 + 360/36 = 27 + 360/36 = 387/36 - 387/36 simplified gives 43/4
- So, 9/12 + 90/9 = 43/4
In mixed form: 103/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/12+90/9 9/24+90/9 9/12+90/18 27/12+90/9 9/36+90/9 9/12+90/27 45/12+90/9 9/60+90/9 9/12+90/45 63/12+90/9 9/84+90/9 9/12+90/63