Add 3/36 and 21/90
3/36 + 21/90 is 19/60.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 90 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 36 × 5 = 180,
3/36 = 3 × 5/36 × 5 = 15/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
21/90 = 21 × 2/90 × 2 = 42/180 - Add the two like fractions:
15/180 + 42/180 = 15 + 42/180 = 57/180 - 57/180 simplified gives 19/60
- So, 3/36 + 21/90 = 19/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/36+21/90 3/36+42/90 3/72+21/90 9/36+21/90 3/36+63/90 15/36+21/90 21/36+21/90