Add 42/21 and 80/42, Solve 2 0/21 + 1 38/42 as a fraction

Add 42/21 and 80/42

1^st number: 2 0/21, 2^nd number: 1 38/42

42/21 + 80/42 is 82/21.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 42 is 42

Next, find the equivalent fraction of both fractional numbers with denominator 42
For the 1st fraction, since 21 × 2 = 42,
42/21 = 42 × 2/21 × 2 = 84/42
Likewise, for the 2nd fraction, since 42 × 1 = 42,
80/42 = 80 × 1/42 × 1 = 80/42
Add the two like fractions:
84/42 + 80/42 = 84 + 80/42 = 164/42
164/42 simplified gives 82/21
So, 42/21 + 80/42 = 82/21
In mixed form: 319/21

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