Add 16/21 and 40/6, Solve 16/21 + 6 4/6 as a fraction

Add 16/21 and 40/6

1^st number: 16/21, 2^nd number: 6 4/6

16/21 + 40/6 is 52/7.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 6 is 42

Next, find the equivalent fraction of both fractional numbers with denominator 42
For the 1st fraction, since 21 × 2 = 42,
16/21 = 16 × 2/21 × 2 = 32/42
Likewise, for the 2nd fraction, since 6 × 7 = 42,
40/6 = 40 × 7/6 × 7 = 280/42
Add the two like fractions:
32/42 + 280/42 = 32 + 280/42 = 312/42
312/42 simplified gives 52/7
So, 16/21 + 40/6 = 52/7
In mixed form: 73/7

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