-9=-4r-4-1

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Solution for -9=-4r-4-1 equation:


-9=-4r-4-1

We simplify the equation to the form, which is simple to understand 
-9=-4r-4-1

We move all terms containing r to the left and all other terms to the right. 
+4r=-4-1+9

We simplify left and right side of the equation. 
+4r=+4

We divide both sides of the equation by 04 to get r. 
r=1

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