Add 1/12 and 30/90
1/12 + 30/90 is 5/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 90 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 12 × 15 = 180,
1/12 = 1 × 15/12 × 15 = 15/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
30/90 = 30 × 2/90 × 2 = 60/180 - Add the two like fractions:
15/180 + 60/180 = 15 + 60/180 = 75/180 - 75/180 simplified gives 5/12
- So, 1/12 + 30/90 = 5/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/12+30/90 1/12+60/90 1/24+30/90 3/12+30/90 1/36+30/90 5/12+30/90 1/60+30/90 7/12+30/90 1/84+30/90