Add 15/42 and 84/28, Solve 15/42 + 3 0/28 as a fraction

Add 15/42 and 84/28

1^st number: 15/42, 2^nd number: 3 0/28

15/42 + 84/28 is 47/14.

Find the least common denominator or LCM of the two denominators:
LCM of 42 and 28 is 84

Next, find the equivalent fraction of both fractional numbers with denominator 84
For the 1st fraction, since 42 × 2 = 84,
15/42 = 15 × 2/42 × 2 = 30/84
Likewise, for the 2nd fraction, since 28 × 3 = 84,
84/28 = 84 × 3/28 × 3 = 252/84
Add the two like fractions:
30/84 + 252/84 = 30 + 252/84 = 282/84
282/84 simplified gives 47/14
So, 15/42 + 84/28 = 47/14
In mixed form: 35/14

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