Add 15/18 and 30/84, Solve 15/18 + 30/84 as a fraction

Add 15/18 and 30/84

15/18 + 30/84 is 25/21.

Find the least common denominator or LCM of the two denominators:
LCM of 18 and 84 is 252

Next, find the equivalent fraction of both fractional numbers with denominator 252
For the 1st fraction, since 18 × 14 = 252,
15/18 = 15 × 14/18 × 14 = 210/252
Likewise, for the 2nd fraction, since 84 × 3 = 252,
30/84 = 30 × 3/84 × 3 = 90/252
Add the two like fractions:
210/252 + 90/252 = 210 + 90/252 = 300/252
300/252 simplified gives 25/21
So, 15/18 + 30/84 = 25/21
In mixed form: 14/21

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