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-3-5r+3r=-5r+3
We simplify the equation to the form, which is simple to understand
-3-5r+3r=-5r+3
We move all terms containing r to the left and all other terms to the right.
-5r+3r+5r=+3+3
We simplify left and right side of the equation.
+3r=+6
We divide both sides of the equation by 3 to get r.
r=2
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