Question 9 Answer & Explanation - SAT Algebra

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algebra

Solve: $4x - 8 = x + 7$

0.2

Correct Answer: B

Choice Ahoice D is the correct answer.

Subtract x: $3x - 8 = 7$
Add 8: $3x = 15$
Divide by 3: $x = 5$
Verify: $4(5) - 8 = 12$ and $5 + 7 = 12$ ✓

Choice Ahoice B is incorrect because calculation error.

Choice Ahoice C is incorrect because calculation error.

Choice Ahoice D is incorrect because calculation error.

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Linear Functions Set 17

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