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