77=7(5k-4)

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Solution for 77=7(5k-4) equation: 



77=7(5k-4)

We move all terms to the left:

77-(7(5k-4))=0



We calculate terms in parentheses: -(7(5k-4)), so:

7(5k-4)

We multiply parentheses

35k-28

Back to the equation:

-(35k-28)



We get rid of parentheses

-35k+28+77=0

We add all the numbers together, and all the variables

-35k+105=0

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

-35k=-105

k=-105/-35

k=+3

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