-40+2k=7(-1+5k)

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Solution for -40+2k=7(-1+5k) equation: 



-40+2k=7(-1+5k)

We move all terms to the left:

-40+2k-(7(-1+5k))=0

We add all the numbers together, and all the variables

2k-(7(5k-1))-40=0



We calculate terms in parentheses: -(7(5k-1)), so:

7(5k-1)

We multiply parentheses

35k-7

Back to the equation:

-(35k-7)



We get rid of parentheses

2k-35k+7-40=0

We add all the numbers together, and all the variables

-33k-33=0

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

-33k=33

k=33/-33

k=-1

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