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6

Set 5: Systems Of Equations (Beginner)

Explanation

Answer: A

PROBLEM

Solve: x + 2y = 14, x + y = 10. Find y.

Solve: x + 2y = 14, x + y = 10. Find y.

A.

4

✓ Correct
B.

2

C.

6

D.

3

Detailed Explanation

Choice A is the best answer. Using elimination or substitution: y = 4

Why others are wrong:
B: 2 is incorrect because it does not satisfy the equation.
C: 6 is incorrect because it does not satisfy the equation.
D: 3 is incorrect because it does not satisfy the equation.
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