Solve for x: x + 7 = 12.

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Study for the GMAS 6th Grade Mathematics Test. Prepare with flashcards and multiple choice questions that feature hints and explanations. Equip yourself for success!

Multiple Choice

Solve for x: x + 7 = 12.

Explanation:
This tests solving a simple equation by undoing addition. To find x, subtract 7 from both sides, leaving x alone: x = 12 − 7 = 5. This value makes the left side 5 + 7 = 12, which matches the right side. The other numbers don’t work because they don’t produce 12 on the left when you add 7 (for example, 7 would give 14, 12 would give 19, and −5 would give 2).

This tests solving a simple equation by undoing addition. To find x, subtract 7 from both sides, leaving x alone: x = 12 − 7 = 5. This value makes the left side 5 + 7 = 12, which matches the right side. The other numbers don’t work because they don’t produce 12 on the left when you add 7 (for example, 7 would give 14, 12 would give 19, and −5 would give 2).

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