16=-4(r+3)+8(8-r)

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Solution for 16=-4(r+3)+8(8-r) equation: 



16=-4(r+3)+8(8-r)

We move all terms to the left:

16-(-4(r+3)+8(8-r))=0

We add all the numbers together, and all the variables

-(-4(r+3)+8(-1r+8))+16=0



We calculate terms in parentheses: -(-4(r+3)+8(-1r+8)), so:

-4(r+3)+8(-1r+8)

We multiply parentheses

-4r-8r-12+64

We add all the numbers together, and all the variables

-12r+52

Back to the equation:

-(-12r+52)



We get rid of parentheses

12r-52+16=0

We add all the numbers together, and all the variables

12r-36=0

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

12r=36

r=36/12

r=3

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