Add 21/36 and 2/20
21/36 + 2/20 is 41/60.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 20 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 36 × 5 = 180,
21/36 = 21 × 5/36 × 5 = 105/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
2/20 = 2 × 9/20 × 9 = 18/180 - Add the two like fractions:
105/180 + 18/180 = 105 + 18/180 = 123/180 - 123/180 simplified gives 41/60
- So, 21/36 + 2/20 = 41/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/36+2/20 21/36+4/20 21/72+2/20 21/36+2/40 63/36+2/20 21/36+6/20 21/36+2/60 21/36+10/20 21/36+14/20