Add 18/12 and 84/45
1st number: 1 6/12, 2nd number: 1 39/45
18/12 + 84/45 is 101/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 45 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 12 × 15 = 180,
18/12 = 18 × 15/12 × 15 = 270/180 - Likewise, for the 2nd fraction, since 45 × 4 = 180,
84/45 = 84 × 4/45 × 4 = 336/180 - Add the two like fractions:
270/180 + 336/180 = 270 + 336/180 = 606/180 - 606/180 simplified gives 101/30
- So, 18/12 + 84/45 = 101/30
In mixed form: 311/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/12+84/45 18/24+84/45 18/12+84/90 54/12+84/45 18/36+84/45 90/12+84/45 18/60+84/45 18/84+84/45