Solve for x: 3x = 15.

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Prepare for the GMAS 6th Grade Mathematics Test with guided quizzes. Study using flashcards and multiple-choice questions with detailed hints. Succeed in your math exam!

Multiple Choice

Solve for x: 3x = 15.

Explanation:
This is about using inverse operations to solve a simple linear equation. To isolate x, undo multiplying by 3 by dividing both sides by 3. So x = 15 ÷ 3 = 5. You can check: 3 × 5 = 15, which matches the equation. If x were 3, 3x would be 9; if x were 15, 3x would be 45; if x were 0, 3x would be 0. Only 5 makes the left side equal to 15.

This is about using inverse operations to solve a simple linear equation. To isolate x, undo multiplying by 3 by dividing both sides by 3. So x = 15 ÷ 3 = 5. You can check: 3 × 5 = 15, which matches the equation. If x were 3, 3x would be 9; if x were 15, 3x would be 45; if x were 0, 3x would be 0. Only 5 makes the left side equal to 15.

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