Add 9/12 and 12/45
9/12 + 12/45 is 61/60.
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,
12/45 = 12 × 4/45 × 4 = 48/180 - Add the two like fractions:
135/180 + 48/180 = 135 + 48/180 = 183/180 - 183/180 simplified gives 61/60
- So, 9/12 + 12/45 = 61/60
In mixed form: 11/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/12+12/45 9/12+24/45 9/24+12/45 9/12+12/90 27/12+12/45 9/12+36/45 9/36+12/45 45/12+12/45 9/12+60/45 9/60+12/45 63/12+12/45 9/12+84/45 9/84+12/45