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r+1-4r=-3-2r
We simplify the equation to the form, which is simple to understand
r+1-4r=-3-2r
We move all terms containing r to the left and all other terms to the right.
+1r-4r+2r=-3-1
We simplify left and right side of the equation.
-1r=-4
We divide both sides of the equation by -1 to get r.
r=4
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