Add 20/12 and 36/45
1st number: 1 8/12, 2nd number: 36/45
20/12 + 36/45 is 37/15.
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,
20/12 = 20 × 15/12 × 15 = 300/180 - Likewise, for the 2nd fraction, since 45 × 4 = 180,
36/45 = 36 × 4/45 × 4 = 144/180 - Add the two like fractions:
300/180 + 144/180 = 300 + 144/180 = 444/180 - 444/180 simplified gives 37/15
- So, 20/12 + 36/45 = 37/15
In mixed form: 27/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/12+36/45 20/12+72/45 20/24+36/45 20/12+36/90 60/12+36/45 20/36+36/45 20/60+36/45 20/84+36/45