Add 10/18 and 90/12
1st number: 10/18, 2nd number: 7 6/12
10/18 + 90/12 is 145/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 12 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 18 × 2 = 36,
10/18 = 10 × 2/18 × 2 = 20/36 - Likewise, for the 2nd fraction, since 12 × 3 = 36,
90/12 = 90 × 3/12 × 3 = 270/36 - Add the two like fractions:
20/36 + 270/36 = 20 + 270/36 = 290/36 - 290/36 simplified gives 145/18
- So, 10/18 + 90/12 = 145/18
In mixed form: 81/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/18+90/12 10/36+90/12 10/18+90/24 30/18+90/12 10/54+90/12 10/18+90/36 50/18+90/12 10/90+90/12 10/18+90/60 70/18+90/12 10/18+90/84