Add 84/42 and 90/84, Solve 2 0/42 + 1 6/84 as a fraction

Add 84/42 and 90/84

1^st number: 2 0/42, 2^nd number: 1 6/84

84/42 + 90/84 is 43/14.

Find the least common denominator or LCM of the two denominators:
LCM of 42 and 84 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 84 × 1 = 84,
90/84 = 90 × 1/84 × 1 = 90/84
Add the two like fractions:
168/84 + 90/84 = 168 + 90/84 = 258/84
258/84 simplified gives 43/14
So, 84/42 + 90/84 = 43/14
In mixed form: 31/14

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