Add 28/70 and 36/12
1st number: 28/70, 2nd number: 3 0/12
28/70 + 36/12 is 17/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 12 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 70 × 6 = 420,
28/70 = 28 × 6/70 × 6 = 168/420 - Likewise, for the 2nd fraction, since 12 × 35 = 420,
36/12 = 36 × 35/12 × 35 = 1260/420 - Add the two like fractions:
168/420 + 1260/420 = 168 + 1260/420 = 1428/420 - 1428/420 simplified gives 17/5
- So, 28/70 + 36/12 = 17/5
In mixed form: 32/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/70+36/12 28/70+72/12 28/70+36/24 84/70+36/12 28/70+36/60 28/70+36/84