100=-4r+4(4r-4)

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Solution for 100=-4r+4(4r-4) equation:


100=-4r+4(4r-4)

We simplify the equation to the form, which is simple to understand 
100=-4r+4(4r-4)

Reorder the terms in parentheses
100=-4r+(+16r-16)

Remove unnecessary parentheses
+100=-4r+16r-16

We move all terms containing r to the left and all other terms to the right. 
+4r-16r=-16-100

We simplify left and right side of the equation. 
-12r=-116

We divide both sides of the equation by -12 to get r. 
r=9.66666666667

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