-28=-4(c-9)-4c

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Solution for -28=-4(c-9)-4c equation: 



-28=-4(c-9)-4c

We move all terms to the left:

-28-(-4(c-9)-4c)=0



We calculate terms in parentheses: -(-4(c-9)-4c), so:

-4(c-9)-4c

We add all the numbers together, and all the variables

-4c-4(c-9)

We multiply parentheses

-4c-4c+36

We add all the numbers together, and all the variables

-8c+36

Back to the equation:

-(-8c+36)



We get rid of parentheses

8c-36-28=0

We add all the numbers together, and all the variables

8c-64=0

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

8c=64

c=64/8

c=8

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