Add 40/12 and 42/7, Solve 3 4/12 + 6 0/7 as a fraction

Add 40/12 and 42/7

1^st number: 3 4/12, 2^nd number: 6 0/7

40/12 + 42/7 is 28/3.

Find the least common denominator or LCM of the two denominators:
LCM of 12 and 7 is 84

Next, find the equivalent fraction of both fractional numbers with denominator 84
For the 1st fraction, since 12 × 7 = 84,
40/12 = 40 × 7/12 × 7 = 280/84
Likewise, for the 2nd fraction, since 7 × 12 = 84,
42/7 = 42 × 12/7 × 12 = 504/84
Add the two like fractions:
280/84 + 504/84 = 280 + 504/84 = 784/84
784/84 simplified gives 28/3
So, 40/12 + 42/7 = 28/3
In mixed form: 91/3

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