Add 20/21 and 40/6, Solve 20/21 + 6 4/6 as a fraction

Add 20/21 and 40/6

1^st number: 20/21, 2^nd number: 6 4/6

20/21 + 40/6 is 160/21.

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,
20/21 = 20 × 2/21 × 2 = 40/42
Likewise, for the 2nd fraction, since 6 × 7 = 42,
40/6 = 40 × 7/6 × 7 = 280/42
Add the two like fractions:
40/42 + 280/42 = 40 + 280/42 = 320/42
320/42 simplified gives 160/21
So, 20/21 + 40/6 = 160/21
In mixed form: 713/21

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