Add 3/90 and 30/12
1st number: 3/90, 2nd number: 2 6/12
3/90 + 30/12 is 38/15.
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,
3/90 = 3 × 2/90 × 2 = 6/180 - Likewise, for the 2nd fraction, since 12 × 15 = 180,
30/12 = 30 × 15/12 × 15 = 450/180 - Add the two like fractions:
6/180 + 450/180 = 6 + 450/180 = 456/180 - 456/180 simplified gives 38/15
- So, 3/90 + 30/12 = 38/15
In mixed form: 28/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/90+30/12 3/90+60/12 3/90+30/24 9/90+30/12 3/90+90/12 3/90+30/36 15/90+30/12 3/90+30/60 21/90+30/12 3/90+30/84