Add 1/12 and 3/45
1/12 + 3/45 is 3/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 45 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 45 × 4 = 180,
3/45 = 3 × 4/45 × 4 = 12/180 - Add the two like fractions:
15/180 + 12/180 = 15 + 12/180 = 27/180 - 27/180 simplified gives 3/20
- So, 1/12 + 3/45 = 3/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/12+3/45 1/12+6/45 1/24+3/45 1/12+3/90 3/12+3/45 1/12+9/45 1/36+3/45 5/12+3/45 1/12+15/45 1/60+3/45 7/12+3/45 1/12+21/45 1/84+3/45