4=-2(k/5)

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Solution for 4=-2(k/5) equation: 



4=-2(k/5)

We move all terms to the left:

4-(-2(k/5))=0

We add all the numbers together, and all the variables

-(-2(+k/5))+4=0

We multiply all the terms by the denominator


-(-2(+k+4*5))=0



We calculate terms in parentheses: -(-2(+k+4*5)), so:

-2(+k+4*5)

We add all the numbers together, and all the variables

-2(k+20)

We multiply parentheses

-2k-40

Back to the equation:

-(-2k-40)



We get rid of parentheses

2k+40=0

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

2k=-40

k=-40/2

k=-20

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