Solve for x: 3x + 7 = 22.

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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 + 7 = 22.

Explanation:
This question tests how to isolate the variable in a simple linear equation by undoing the operations on the variable. First, undo adding 7 by subtracting 7 from both sides, which gives 3x = 15. Then undo multiplying by 3 by dividing both sides by 3, yielding x = 5. Checking the result: 3(5) + 7 = 15 + 7 = 22, which matches. So the value of x is 5.

This question tests how to isolate the variable in a simple linear equation by undoing the operations on the variable. First, undo adding 7 by subtracting 7 from both sides, which gives 3x = 15. Then undo multiplying by 3 by dividing both sides by 3, yielding x = 5. Checking the result: 3(5) + 7 = 15 + 7 = 22, which matches. So the value of x is 5.

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