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5r-9=13
We simplify the equation to the form, which is simple to understand
5r-9=13
We move all terms containing r to the left and all other terms to the right.
+5r=+13+9
We simplify left and right side of the equation.
+5r=+22
We divide both sides of the equation by 5 to get r.
r=4.4
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