5(-r+4)=4(r-4)

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Solution for 5(-r+4)=4(r-4) equation: 



5(-r+4)=4(r-4)

We move all terms to the left:

5(-r+4)-(4(r-4))=0

We add all the numbers together, and all the variables

5(-1r+4)-(4(r-4))=0

We multiply parentheses

-5r-(4(r-4))+20=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

-5r-4r+16+20=0

We add all the numbers together, and all the variables

-9r+36=0

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

-9r=-36

r=-36/-9

r=+4

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