Add 84/45 and 30/18
1st number: 1 39/45, 2nd number: 1 12/18
84/45 + 30/18 is 53/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 18 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 45 × 2 = 90,
84/45 = 84 × 2/45 × 2 = 168/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
30/18 = 30 × 5/18 × 5 = 150/90 - Add the two like fractions:
168/90 + 150/90 = 168 + 150/90 = 318/90 - 318/90 simplified gives 53/15
- So, 84/45 + 30/18 = 53/15
In mixed form: 38/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/45+60/18 84/90+30/18 84/45+30/36 84/45+90/18 84/45+30/54 84/45+30/90