Add 28/12 and 9/70
1st number: 2 4/12, 2nd number: 9/70
28/12 + 9/70 is 517/210.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 70 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 12 × 35 = 420,
28/12 = 28 × 35/12 × 35 = 980/420 - Likewise, for the 2nd fraction, since 70 × 6 = 420,
9/70 = 9 × 6/70 × 6 = 54/420 - Add the two like fractions:
980/420 + 54/420 = 980 + 54/420 = 1034/420 - 1034/420 simplified gives 517/210
- So, 28/12 + 9/70 = 517/210
In mixed form: 297/210
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/12+9/70 28/12+18/70 28/24+9/70 84/12+9/70 28/12+27/70 28/36+9/70 28/12+45/70 28/60+9/70 28/12+63/70 28/84+9/70