Add 12/84 and 35/9
1st number: 12/84, 2nd number: 3 8/9
12/84 + 35/9 is 254/63.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 9 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 84 × 3 = 252,
12/84 = 12 × 3/84 × 3 = 36/252 - Likewise, for the 2nd fraction, since 9 × 28 = 252,
35/9 = 35 × 28/9 × 28 = 980/252 - Add the two like fractions:
36/252 + 980/252 = 36 + 980/252 = 1016/252 - 1016/252 simplified gives 254/63
- So, 12/84 + 35/9 = 254/63
In mixed form: 42/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/84+35/9 12/84+70/9 12/84+35/18 36/84+35/9 12/84+35/27 60/84+35/9 12/84+35/45 12/84+35/63