Add 20/12 and 84/42, Solve 1 8/12 + 2 0/42 as a fraction

Add 20/12 and 84/42

1^st number: 1 8/12, 2^nd number: 2 0/42

20/12 + 84/42 is 11/3.

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

Next, find the equivalent fraction of both fractional numbers with denominator 84
For the 1st fraction, since 12 × 7 = 84,
20/12 = 20 × 7/12 × 7 = 140/84
Likewise, for the 2nd fraction, since 42 × 2 = 84,
84/42 = 84 × 2/42 × 2 = 168/84
Add the two like fractions:
140/84 + 168/84 = 140 + 168/84 = 308/84
308/84 simplified gives 11/3
So, 20/12 + 84/42 = 11/3
In mixed form: 32/3

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