Add 21/75 and 3/18
21/75 + 3/18 is 67/150.
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,
21/75 = 21 × 6/75 × 6 = 126/450 - Likewise, for the 2nd fraction, since 18 × 25 = 450,
3/18 = 3 × 25/18 × 25 = 75/450 - Add the two like fractions:
126/450 + 75/450 = 126 + 75/450 = 201/450 - 201/450 simplified gives 67/150
- So, 21/75 + 3/18 = 67/150
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/75+3/18 21/75+6/18 21/75+3/36 63/75+3/18 21/75+9/18 21/75+3/54 21/75+15/18 21/75+3/90 21/75+21/18