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5+2r-2=8r+5-5r
We simplify the equation to the form, which is simple to understand
5+2r-2=8r+5-5r
We move all terms containing r to the left and all other terms to the right.
+2r-8r+5r=+5-5+2
We simplify left and right side of the equation.
-1r=+2
We divide both sides of the equation by -1 to get r.
r=-2
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