Add 5/90 and 84/12
1st number: 5/90, 2nd number: 7 0/12
5/90 + 84/12 is 127/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 12 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 90 × 2 = 180,
5/90 = 5 × 2/90 × 2 = 10/180 - Likewise, for the 2nd fraction, since 12 × 15 = 180,
84/12 = 84 × 15/12 × 15 = 1260/180 - Add the two like fractions:
10/180 + 1260/180 = 10 + 1260/180 = 1270/180 - 1270/180 simplified gives 127/18
- So, 5/90 + 84/12 = 127/18
In mixed form: 71/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/90+84/12 5/90+84/24 15/90+84/12 5/90+84/36 25/90+84/12 5/90+84/60 35/90+84/12