Add 45/36 and 20/30
1st number: 1 9/36, 2nd number: 20/30
45/36 + 20/30 is 23/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 30 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 36 × 5 = 180,
45/36 = 45 × 5/36 × 5 = 225/180 - Likewise, for the 2nd fraction, since 30 × 6 = 180,
20/30 = 20 × 6/30 × 6 = 120/180 - Add the two like fractions:
225/180 + 120/180 = 225 + 120/180 = 345/180 - 345/180 simplified gives 23/12
- So, 45/36 + 20/30 = 23/12
In mixed form: 111/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/36+20/30 45/36+40/30 45/72+20/30 45/36+20/60 45/36+60/30 45/36+20/90