Add 20/36 and 21/5
1st number: 20/36, 2nd number: 4 1/5
20/36 + 21/5 is 214/45.
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,
20/36 = 20 × 5/36 × 5 = 100/180 - Likewise, for the 2nd fraction, since 5 × 36 = 180,
21/5 = 21 × 36/5 × 36 = 756/180 - Add the two like fractions:
100/180 + 756/180 = 100 + 756/180 = 856/180 - 856/180 simplified gives 214/45
- So, 20/36 + 21/5 = 214/45
In mixed form: 434/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/36+21/5 20/36+42/5 20/72+21/5 20/36+21/10 60/36+21/5 20/36+63/5 20/36+21/15 20/36+21/25 20/36+21/35