Add 56/28 and 80/42, Solve 2 0/28 + 1 38/42 as a fraction

Add 56/28 and 80/42

1^st number: 2 0/28, 2^nd number: 1 38/42

56/28 + 80/42 is 82/21.

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

Next, find the equivalent fraction of both fractional numbers with denominator 84
For the 1st fraction, since 28 × 3 = 84,
56/28 = 56 × 3/28 × 3 = 168/84
Likewise, for the 2nd fraction, since 42 × 2 = 84,
80/42 = 80 × 2/42 × 2 = 160/84
Add the two like fractions:
168/84 + 160/84 = 168 + 160/84 = 328/84
328/84 simplified gives 82/21
So, 56/28 + 80/42 = 82/21
In mixed form: 319/21

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