2=-2(-10+k)

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Solution for 2=-2(-10+k) equation: 



2=-2(-10+k)

We move all terms to the left:

2-(-2(-10+k))=0

We add all the numbers together, and all the variables

-(-2(k-10))+2=0



We calculate terms in parentheses: -(-2(k-10)), so:

-2(k-10)

We multiply parentheses

-2k+20

Back to the equation:

-(-2k+20)



We get rid of parentheses

2k-20+2=0

We add all the numbers together, and all the variables

2k-18=0

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

2k=18

k=18/2

k=9

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