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6r+9=13r-5
We simplify the equation to the form, which is simple to understand
6r+9=13r-5
We move all terms containing r to the left and all other terms to the right.
+6r-13r=-5-9
We simplify left and right side of the equation.
-7r=-14
We divide both sides of the equation by -7 to get r.
r=2
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