Add 21/50 and 30/18
1st number: 21/50, 2nd number: 1 12/18
21/50 + 30/18 is 313/150.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 18 is 450
Next, find the equivalent fraction of both fractional numbers with denominator 450 - For the 1st fraction, since 50 × 9 = 450,
21/50 = 21 × 9/50 × 9 = 189/450 - Likewise, for the 2nd fraction, since 18 × 25 = 450,
30/18 = 30 × 25/18 × 25 = 750/450 - Add the two like fractions:
189/450 + 750/450 = 189 + 750/450 = 939/450 - 939/450 simplified gives 313/150
- So, 21/50 + 30/18 = 313/150
In mixed form: 213/150
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/50+30/18 21/50+60/18 21/50+30/36 63/50+30/18 21/50+90/18 21/50+30/54 21/50+30/90