Solve for x: 5x = 45.

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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: 5x = 45.

Explanation:
The key idea is to undo the multiplication by 5 to isolate x. Since 5x means 5 times x, divide both sides by 5: x = 45 ÷ 5 = 9. Check that 5 × 9 = 45, so it works. If you test nearby numbers, like 8 or 10, you’d get 40 or 50, which don’t match 45, confirming 9 is the correct value.

The key idea is to undo the multiplication by 5 to isolate x. Since 5x means 5 times x, divide both sides by 5: x = 45 ÷ 5 = 9. Check that 5 × 9 = 45, so it works. If you test nearby numbers, like 8 or 10, you’d get 40 or 50, which don’t match 45, confirming 9 is the correct value.

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