Question

to isolate the variable term on the left side of the equation, you should ____.

add 9 to both sides of the equation

subtract 30 from both sides of the equation

divide both sides of the equation by 9

multiply both sides of the equation by 3

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Explanation:

Assuming the equation is of the form (e.g., \( \frac{x}{3}-9 = 30 \)), to isolate the variable term (\( \frac{x}{3} \)), we use the addition property of equality. Adding 9 to both sides cancels the -9 on the left, leaving the variable term. Subtracting 30 would not isolate the variable term. Dividing by 9 or multiplying by 3 at this stage is incorrect as the constant term (-9) is still present. So adding 9 to both sides is the correct step.

Answer:

add 9 to both sides of the equation