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1

Set 1: Systems Of Equations (Intermediate)

Explanation

Answer: D

PROBLEM

Solve: 3x + y = 12, x + 2y = 14. Find x.

Solve: 3x + y = 12, x + 2y = 14. Find x.

A.

4

B.

1

C.

3

D.

2

✓ Correct

Detailed Explanation

Choice D is the best answer. Using elimination or substitution: x = 2

Why others are wrong:
A: 4 is incorrect because it does not satisfy the equation.
B: 1 is incorrect because it does not satisfy the equation.
C: 3 is incorrect because it does not satisfy the equation.
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