Add 21/90 and 2/36
21/90 + 2/36 is 13/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 36 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 90 × 2 = 180,
21/90 = 21 × 2/90 × 2 = 42/180 - Likewise, for the 2nd fraction, since 36 × 5 = 180,
2/36 = 2 × 5/36 × 5 = 10/180 - Add the two like fractions:
42/180 + 10/180 = 42 + 10/180 = 52/180 - 52/180 simplified gives 13/45
- So, 21/90 + 2/36 = 13/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/90+2/36 21/90+4/36 21/90+2/72 63/90+2/36 21/90+6/36 21/90+10/36 21/90+14/36