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3

Set 5: Systems Of Equations (Intermediate)

Explanation

Answer: B

PROBLEM

Solve: 4x + 4y = 64, x + 3y = 30. Find y.

Solve: 4x + 4y = 64, x + 3y = 30. Find y.

A.

9

B.

7

✓ Correct
C.

5

D.

8

Detailed Explanation

Choice B is the best answer. Using elimination or substitution: y = 7

Why others are wrong:
A: 9 is incorrect because it does not satisfy the equation.
C: 5 is incorrect because it does not satisfy the equation.
D: 8 is incorrect because it does not satisfy the equation.
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