Step 1. Goal is to get only numbers on one side and the variable on the other side of the equation. First, subtract 3r from both sides of the equation to put the variable r in the left side.
Step 2. Add 3 to both sides of the equation to isolate r by itself and you'll have numbers only on the right side.
Step 3. Now, check solution by substituting into the original given equation and see if it leads to a true statement.
which is a true statement.
Step 4. ANSWER: The solution is
I hope the above steps were helpful.
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