Add 3/12 and 84/45
1st number: 3/12, 2nd number: 1 39/45
3/12 + 84/45 is 127/60.
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,
3/12 = 3 × 15/12 × 15 = 45/180 - Likewise, for the 2nd fraction, since 45 × 4 = 180,
84/45 = 84 × 4/45 × 4 = 336/180 - Add the two like fractions:
45/180 + 336/180 = 45 + 336/180 = 381/180 - 381/180 simplified gives 127/60
- So, 3/12 + 84/45 = 127/60
In mixed form: 27/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/12+84/45 3/24+84/45 3/12+84/90 9/12+84/45 3/36+84/45 15/12+84/45 3/60+84/45 21/12+84/45 3/84+84/45