-64=-4(1+5k)-5(5k-6)

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Solution for -64=-4(1+5k)-5(5k-6) equation: 



-64=-4(1+5k)-5(5k-6)

We move all terms to the left:

-64-(-4(1+5k)-5(5k-6))=0

We add all the numbers together, and all the variables

-(-4(5k+1)-5(5k-6))-64=0



We calculate terms in parentheses: -(-4(5k+1)-5(5k-6)), so:

-4(5k+1)-5(5k-6)

We multiply parentheses

-20k-25k-4+30

We add all the numbers together, and all the variables

-45k+26

Back to the equation:

-(-45k+26)



We get rid of parentheses

45k-26-64=0

We add all the numbers together, and all the variables

45k-90=0

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

45k=90

k=90/45

k=2

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