Add 9/12 and 1/45
9/12 + 1/45 is 139/180.
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,
9/12 = 9 × 15/12 × 15 = 135/180 - Likewise, for the 2nd fraction, since 45 × 4 = 180,
1/45 = 1 × 4/45 × 4 = 4/180 - Add the two like fractions:
135/180 + 4/180 = 135 + 4/180 = 139/180 - So, 9/12 + 1/45 = 139/180
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/12+1/45 9/12+2/45 9/24+1/45 9/12+1/90 27/12+1/45 9/12+3/45 9/36+1/45 45/12+1/45 9/12+5/45 9/60+1/45 63/12+1/45 9/12+7/45 9/84+1/45