Solve for x: 3x = 18.

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Prepare for the Grade 6 FAST Mathematics Test. Study with comprehensive questions, solutions, and tips to maximize your performance and excel in your exam!

Multiple Choice

Solve for x: 3x = 18.

Explanation:
To solve 3x = 18, undo the multiplication by 3 to isolate x. Divide both sides by 3: x = 18 ÷ 3 = 6. You can check by substituting back: 3 × 6 = 18, which matches the right side. If x were 3, 3x would be 9; if x were 9, 3x would be 27; if x were 12, 3x would be 36. Only x = 6 makes both sides equal.

To solve 3x = 18, undo the multiplication by 3 to isolate x. Divide both sides by 3: x = 18 ÷ 3 = 6. You can check by substituting back: 3 × 6 = 18, which matches the right side. If x were 3, 3x would be 9; if x were 9, 3x would be 27; if x were 12, 3x would be 36. Only x = 6 makes both sides equal.

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