155=-5(-7-8k)

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Solution for 155=-5(-7-8k) equation: 



155=-5(-7-8k)

We move all terms to the left:

155-(-5(-7-8k))=0

We add all the numbers together, and all the variables

-(-5(-8k-7))+155=0



We calculate terms in parentheses: -(-5(-8k-7)), so:

-5(-8k-7)

We multiply parentheses

40k+35

Back to the equation:

-(40k+35)



We get rid of parentheses

-40k-35+155=0

We add all the numbers together, and all the variables

-40k+120=0

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

-40k=-120

k=-120/-40

k=+3

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