Add 21/75 and 84/45
1st number: 21/75, 2nd number: 1 39/45
21/75 + 84/45 is 161/75.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 45 is 225
Next, find the equivalent fraction of both fractional numbers with denominator 225 - For the 1st fraction, since 75 × 3 = 225,
21/75 = 21 × 3/75 × 3 = 63/225 - Likewise, for the 2nd fraction, since 45 × 5 = 225,
84/45 = 84 × 5/45 × 5 = 420/225 - Add the two like fractions:
63/225 + 420/225 = 63 + 420/225 = 483/225 - 483/225 simplified gives 161/75
- So, 21/75 + 84/45 = 161/75
In mixed form: 211/75
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/75+84/45 21/75+84/90 63/75+84/45