Question 9 Answer & Explanation - SAT Algebra | HackSAT.net

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9

algebra

Solve for $b$ : $3a + b = c$

A

b = c - 3a

B

b = 3a - c

C

b = c + 3a

D

b = c / 3a

Correct Answer: A

Choice Dhoice B is the correct answer.

Start: $3a + b = c$
Subtract 3a: $b = c - 3a$

Choice Dhoice D is incorrect because sign error.

Choice Dhoice C is incorrect because sign error.

Choice Dhoice C is incorrect because divided.

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Linear Functions Set 36

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