Add 36/20 and 27/90
1st number: 1 16/20, 2nd number: 27/90
36/20 + 27/90 is 21/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 90 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 20 × 9 = 180,
36/20 = 36 × 9/20 × 9 = 324/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
27/90 = 27 × 2/90 × 2 = 54/180 - Add the two like fractions:
324/180 + 54/180 = 324 + 54/180 = 378/180 - 378/180 simplified gives 21/10
- So, 36/20 + 27/90 = 21/10
In mixed form: 21/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/20+27/90 36/20+54/90 36/40+27/90 36/20+81/90 36/60+27/90