Add 84/75 and 21/18
1st number: 1 9/75, 2nd number: 1 3/18
84/75 + 21/18 is 343/150.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 18 is 450
Next, find the equivalent fraction of both fractional numbers with denominator 450 - For the 1st fraction, since 75 × 6 = 450,
84/75 = 84 × 6/75 × 6 = 504/450 - Likewise, for the 2nd fraction, since 18 × 25 = 450,
21/18 = 21 × 25/18 × 25 = 525/450 - Add the two like fractions:
504/450 + 525/450 = 504 + 525/450 = 1029/450 - 1029/450 simplified gives 343/150
- So, 84/75 + 21/18 = 343/150
In mixed form: 243/150
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/75+42/18 84/75+21/36 84/75+63/18 84/75+21/54 84/75+21/90