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r/(-4)-3=9
We simplify the equation to the form, which is simple to understand
r/(-4)-3=9
Reorder the terms in parentheses
+(-0.25r)-3=9
Remove unnecessary parentheses
-0.25r-3=+9
We move all terms containing r to the left and all other terms to the right.
-0.25r=+9+3
We simplify left and right side of the equation.
-0.25r=+12
We divide both sides of the equation by -0.25 to get r.
r=-48
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