9-3r=-4(r-4)

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Solution for 9-3r=-4(r-4) equation: 



9-3r=-4(r-4)

We move all terms to the left:

9-3r-(-4(r-4))=0



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

-4(r-4)

We multiply parentheses

-4r+16

Back to the equation:

-(-4r+16)



We get rid of parentheses

-3r+4r-16+9=0

We add all the numbers together, and all the variables

r-7=0

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

r=7

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