Add 15/84 and 12/3
1st number: 15/84, 2nd number: 4 0/3
15/84 + 12/3 is 117/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 3 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 84 × 1 = 84,
15/84 = 15 × 1/84 × 1 = 15/84 - Likewise, for the 2nd fraction, since 3 × 28 = 84,
12/3 = 12 × 28/3 × 28 = 336/84 - Add the two like fractions:
15/84 + 336/84 = 15 + 336/84 = 351/84 - 351/84 simplified gives 117/28
- So, 15/84 + 12/3 = 117/28
In mixed form: 45/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/84+12/3 15/84+24/3 15/84+12/6 45/84+12/3 15/84+36/3 15/84+12/9 75/84+12/3 15/84+60/3 15/84+12/15 15/84+84/3 15/84+12/21