-128=r-4(7r+5)

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Solution for -128=r-4(7r+5) equation:


-128=r-4(7r+5)

We simplify the equation to the form, which is simple to understand 
-128=r-4(7r+5)

Reorder the terms in parentheses
-128=r+(-28r-20)

Remove unnecessary parentheses
-128=+r-28r-20

We move all terms containing r to the left and all other terms to the right. 
-1r+28r=-20+128

We simplify left and right side of the equation. 
+27r=+108

We divide both sides of the equation by 27 to get r. 
r=4

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