Add 18/28 and 21/24, Solve 18/28 + 21/24 as a fraction

Add 18/28 and 21/24

18/28 + 21/24 is 85/56.

Find the least common denominator or LCM of the two denominators:
LCM of 28 and 24 is 168

Next, find the equivalent fraction of both fractional numbers with denominator 168
For the 1st fraction, since 28 × 6 = 168,
18/28 = 18 × 6/28 × 6 = 108/168
Likewise, for the 2nd fraction, since 24 × 7 = 168,
21/24 = 21 × 7/24 × 7 = 147/168
Add the two like fractions:
108/168 + 147/168 = 108 + 147/168 = 255/168
255/168 simplified gives 85/56
So, 18/28 + 21/24 = 85/56
In mixed form: 129/56

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