Solve for x: 2x = 3x - 9.

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Multiple Choice

Solve for x: 2x = 3x - 9.

Explanation:
Solving a simple linear equation means getting the unknown by itself. For 2x = 3x - 9, you can move the x terms to one side. Subtracting 2x from both sides gives 0 = x - 9, and then adding 9 to both sides yields x = 9. Quick check: plug in x = 9, left side is 18 and right side is 27 - 9 = 18, so both sides balance. The value that satisfies the equation is 9; the other choices won’t balance the equation when substituted.

Solving a simple linear equation means getting the unknown by itself. For 2x = 3x - 9, you can move the x terms to one side. Subtracting 2x from both sides gives 0 = x - 9, and then adding 9 to both sides yields x = 9. Quick check: plug in x = 9, left side is 18 and right side is 27 - 9 = 18, so both sides balance. The value that satisfies the equation is 9; the other choices won’t balance the equation when substituted.

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