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3

Set 3: Systems Of Equations (Intermediate)

Explanation

Answer: D

PROBLEM

Solve: 2x + 5y = 68, 3x + 4y = 67. Find x.

Solve: 2x + 5y = 68, 3x + 4y = 67. Find x.

A.

11

B.

10

C.

8

D.

9

✓ Correct

Detailed Explanation

Choice D is the best answer. Using elimination or substitution: x = 9

Why others are wrong:
A: 11 is incorrect because it does not satisfy the equation.
B: 10 is incorrect because it does not satisfy the equation.
C: 8 is incorrect because it does not satisfy the equation.
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