40=4(2+k)

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Solution for 40=4(2+k) equation: 



40=4(2+k)

We move all terms to the left:

40-(4(2+k))=0

We add all the numbers together, and all the variables

-(4(k+2))+40=0



We calculate terms in parentheses: -(4(k+2)), so:

4(k+2)

We multiply parentheses

4k+8

Back to the equation:

-(4k+8)



We get rid of parentheses

-4k-8+40=0

We add all the numbers together, and all the variables

-4k+32=0

We move all terms containing k to the left, all other terms to the right

-4k=-32

k=-32/-4

k=+8

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