16=-4(r+-5)

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Solution for 16=-4(r+-5) equation: 



16=-4(r+-5)

We move all terms to the left:

16-(-4(r+-5))=0

We add all the numbers together, and all the variables

-(-4(r-5))+16=0



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

-4(r-5)

We multiply parentheses

-4r+20

Back to the equation:

-(-4r+20)



We get rid of parentheses

4r-20+16=0

We add all the numbers together, and all the variables

4r-4=0

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

4r=4

r=4/4

r=1

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