Add 21/5 and 2/18
1st number: 4 1/5, 2nd number: 2/18
21/5 + 2/18 is 194/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 18 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 5 × 18 = 90,
21/5 = 21 × 18/5 × 18 = 378/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
2/18 = 2 × 5/18 × 5 = 10/90 - Add the two like fractions:
378/90 + 10/90 = 378 + 10/90 = 388/90 - 388/90 simplified gives 194/45
- So, 21/5 + 2/18 = 194/45
In mixed form: 414/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/5+2/18 21/5+4/18 21/10+2/18 21/5+2/36 63/5+2/18 21/5+6/18 21/15+2/18 21/5+2/54 21/5+10/18 21/25+2/18 21/5+2/90 21/5+14/18 21/35+2/18