Add 56/12 and 40/42, Solve 4 8/12 + 40/42 as a fraction

Add 56/12 and 40/42

1^st number: 4 8/12, 2^nd number: 40/42

56/12 + 40/42 is 118/21.

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,
56/12 = 56 × 7/12 × 7 = 392/84
Likewise, for the 2nd fraction, since 42 × 2 = 84,
40/42 = 40 × 2/42 × 2 = 80/84
Add the two like fractions:
392/84 + 80/84 = 392 + 80/84 = 472/84
472/84 simplified gives 118/21
So, 56/12 + 40/42 = 118/21
In mixed form: 513/21

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