Add 21/18 and 15/50
1st number: 1 3/18, 2nd number: 15/50
21/18 + 15/50 is 22/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 50 is 450
Next, find the equivalent fraction of both fractional numbers with denominator 450 - For the 1st fraction, since 18 × 25 = 450,
21/18 = 21 × 25/18 × 25 = 525/450 - Likewise, for the 2nd fraction, since 50 × 9 = 450,
15/50 = 15 × 9/50 × 9 = 135/450 - Add the two like fractions:
525/450 + 135/450 = 525 + 135/450 = 660/450 - 660/450 simplified gives 22/15
- So, 21/18 + 15/50 = 22/15
In mixed form: 17/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/18+15/50 21/18+30/50 21/36+15/50 63/18+15/50 21/18+45/50 21/54+15/50 21/18+75/50 21/90+15/50