Answer:
r=7
Explanation:
First subtract 12 from both sides
Now you have -42=-6r
Next divide each side by -6
Now you have 7=r
And that is your answer
Answer: r = 7
Subtract 12 from both sides to isolate the r variable. You have -42 = -6r. Divide both sides by -6 to get r by itself and you get r = 7. Verify by substituting 7 as the r value and solving the equation.
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