Add 28/15 and 36/84, Solve 1 13/15 + 36/84 as a fraction

Add 28/15 and 36/84

1^st number: 1 13/15, 2^nd number: 36/84

28/15 + 36/84 is 241/105.

Find the least common denominator or LCM of the two denominators:
LCM of 15 and 84 is 420

Next, find the equivalent fraction of both fractional numbers with denominator 420
For the 1st fraction, since 15 × 28 = 420,
28/15 = 28 × 28/15 × 28 = 784/420
Likewise, for the 2nd fraction, since 84 × 5 = 420,
36/84 = 36 × 5/84 × 5 = 180/420
Add the two like fractions:
784/420 + 180/420 = 784 + 180/420 = 964/420
964/420 simplified gives 241/105
So, 28/15 + 36/84 = 241/105
In mixed form: 231/105

MathStep (Works offline)

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