Add 40/42 and 28/12, Solve 40/42 + 2 4/12 as a fraction

Add 40/42 and 28/12

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

40/42 + 28/12 is 23/7.

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

Next, find the equivalent fraction of both fractional numbers with denominator 84
For the 1st fraction, since 42 × 2 = 84,
40/42 = 40 × 2/42 × 2 = 80/84
Likewise, for the 2nd fraction, since 12 × 7 = 84,
28/12 = 28 × 7/12 × 7 = 196/84
Add the two like fractions:
80/84 + 196/84 = 80 + 196/84 = 276/84
276/84 simplified gives 23/7
So, 40/42 + 28/12 = 23/7
In mixed form: 32/7

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