Add 84/42 and 15/12, Solve 2 0/42 + 1 3/12 as a fraction

Add 84/42 and 15/12

1^st number: 2 0/42, 2^nd number: 1 3/12

84/42 + 15/12 is 13/4.

Find the least common denominator or LCM of the two denominators:
LCM of 42 and 12 is 84

Next, find the equivalent fraction of both fractional numbers with denominator 84
For the 1st fraction, since 42 × 2 = 84,
84/42 = 84 × 2/42 × 2 = 168/84
Likewise, for the 2nd fraction, since 12 × 7 = 84,
15/12 = 15 × 7/12 × 7 = 105/84
Add the two like fractions:
168/84 + 105/84 = 168 + 105/84 = 273/84
273/84 simplified gives 13/4
So, 84/42 + 15/12 = 13/4
In mixed form: 31/4

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