Add 28/35 and 36/12, Solve 28/35 + 3 0/12 as a fraction

Add 28/35 and 36/12

1^st number: 28/35, 2^nd number: 3 0/12

28/35 + 36/12 is 19/5.

Find the least common denominator or LCM of the two denominators:
LCM of 35 and 12 is 420

Next, find the equivalent fraction of both fractional numbers with denominator 420
For the 1st fraction, since 35 × 12 = 420,
28/35 = 28 × 12/35 × 12 = 336/420
Likewise, for the 2nd fraction, since 12 × 35 = 420,
36/12 = 36 × 35/12 × 35 = 1260/420
Add the two like fractions:
336/420 + 1260/420 = 336 + 1260/420 = 1596/420
1596/420 simplified gives 19/5
So, 28/35 + 36/12 = 19/5
In mixed form: 34/5

MathStep (Works offline)

Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad