Add 8/28 and 63/12, Solve 8/28 + 5 3/12 as a fraction

Add 8/28 and 63/12

1^st number: 8/28, 2^nd number: 5 3/12

8/28 + 63/12 is 155/28.

Find the least common denominator or LCM of the two denominators:
LCM of 28 and 12 is 84

Next, find the equivalent fraction of both fractional numbers with denominator 84
For the 1st fraction, since 28 × 3 = 84,
8/28 = 8 × 3/28 × 3 = 24/84
Likewise, for the 2nd fraction, since 12 × 7 = 84,
63/12 = 63 × 7/12 × 7 = 441/84
Add the two like fractions:
24/84 + 441/84 = 24 + 441/84 = 465/84
465/84 simplified gives 155/28
So, 8/28 + 63/12 = 155/28
In mixed form: 515/28

MathStep (Works offline)

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