Add 28/6 and 21/56, Solve 4 4/6 + 21/56 as a fraction

Add 28/6 and 21/56

1^st number: 4 4/6, 2^nd number: 21/56

28/6 + 21/56 is 121/24.

Find the least common denominator or LCM of the two denominators:
LCM of 6 and 56 is 168

Next, find the equivalent fraction of both fractional numbers with denominator 168
For the 1st fraction, since 6 × 28 = 168,
28/6 = 28 × 28/6 × 28 = 784/168
Likewise, for the 2nd fraction, since 56 × 3 = 168,
21/56 = 21 × 3/56 × 3 = 63/168
Add the two like fractions:
784/168 + 63/168 = 784 + 63/168 = 847/168
847/168 simplified gives 121/24
So, 28/6 + 21/56 = 121/24
In mixed form: 51/24

MathStep (Works offline)

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