Question 4 Answer & Explanation - SAT Algebra

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algebra

If $5(x - 1) = 3x + 7$ , what is the value of $x$ ?

Correct Answer: A

Choice Choice A is the correct answer.

Distribute: $5x - 5 = 3x + 7$
Subtract 3x: $2x - 5 = 7$
Add 5: $2x = 12$
Divide by 2: $x = 6$
Verify: $5(5) = 25$ and $18 + 7 = 25$ ✓

Choice Choice D is incorrect because calculation error.

Choice Choice C is incorrect because calculation error.

Choice Choice B is incorrect because calculation error.

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