Add 12/45 and 2/12
12/45 + 2/12 is 13/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 12 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 45 × 4 = 180,
12/45 = 12 × 4/45 × 4 = 48/180 - Likewise, for the 2nd fraction, since 12 × 15 = 180,
2/12 = 2 × 15/12 × 15 = 30/180 - Add the two like fractions:
48/180 + 30/180 = 48 + 30/180 = 78/180 - 78/180 simplified gives 13/30
- So, 12/45 + 2/12 = 13/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/45+2/12 12/45+4/12 12/90+2/12 12/45+2/24 36/45+2/12 12/45+6/12 12/45+2/36 60/45+2/12 12/45+10/12 12/45+2/60 84/45+2/12 12/45+14/12 12/45+2/84