-40-2k=-7(k+3)+1

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Solution for -40-2k=-7(k+3)+1 equation: 



-40-2k=-7(k+3)+1

We move all terms to the left:

-40-2k-(-7(k+3)+1)=0



We calculate terms in parentheses: -(-7(k+3)+1), so:

-7(k+3)+1

We multiply parentheses

-7k-21+1

We add all the numbers together, and all the variables

-7k-20

Back to the equation:

-(-7k-20)



We get rid of parentheses

-2k+7k+20-40=0

We add all the numbers together, and all the variables

5k-20=0

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

5k=20

k=20/5

k=4

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