Question 7 Answer & Explanation - SAT Algebra

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algebra

Solve: $3(x + 1) + 2x = 18$

Correct Answer: C

Choice Ahoice D is the correct answer.

Distribute: $3x + 3 + 2x = 18$
Combine: $5x + 3 = 18$
Subtract 3: $5x = 15$
Divide by 5: $x = 3$
Verify: $3(4) + 6 = 18$ ✓

Choice Ahoice D is incorrect because calculation error.

Choice Ahoice C is incorrect because calculation error.

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Linear Functions Set 15

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