Add 45/36 and 20/5
1st number: 1 9/36, 2nd number: 4 0/5
45/36 + 20/5 is 21/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 5 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 5 × 36 = 180,
20/5 = 20 × 36/5 × 36 = 720/180 - Add the two like fractions:
225/180 + 720/180 = 225 + 720/180 = 945/180 - 945/180 simplified gives 21/4
- So, 45/36 + 20/5 = 21/4
In mixed form: 51/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/36+20/5 45/36+40/5 45/72+20/5 45/36+20/10 45/36+60/5 45/36+20/15 45/36+20/25 45/36+20/35