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-5-7r+r=-5
We simplify the equation to the form, which is simple to understand
-5-7r+r=-5
We move all terms containing r to the left and all other terms to the right.
-7r+1r=-5+5
We simplify left and right side of the equation.
-6r=0
We divide both sides of the equation by -6 to get r.
r=-0
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