-r+9=-9+2r

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Solution for -r+9=-9+2r equation:


-r+9=-9+2r

We simplify the equation to the form, which is simple to understand 
-r+9=-9+2r

We move all terms containing r to the left and all other terms to the right. 
-1r-2r=-9-9

We simplify left and right side of the equation. 
-3r=-18

We divide both sides of the equation by -3 to get r. 
r=6

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