-1+4(5r+4)=-85

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Solution for -1+4(5r+4)=-85 equation: 



-1+4(5r+4)=-85

We move all terms to the left:

-1+4(5r+4)-(-85)=0

We add all the numbers together, and all the variables

4(5r+4)+84=0

We multiply parentheses

20r+16+84=0

We add all the numbers together, and all the variables

20r+100=0

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

20r=-100

r=-100/20

r=-5

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