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2

Set 1: Systems Of Equations (Beginner)

Explanation

Answer: D

PROBLEM

Solve: x + y = 15, 2x + 4y = 46. Find y.

Solve: x + y = 15, 2x + 4y = 46. Find y.

A.

9

B.

6

C.

7

D.

8

✓ Correct

Detailed Explanation

Choice D is the best answer. Using elimination or substitution: y = 8

Why others are wrong:
A: 9 is incorrect because it does not satisfy the equation.
B: 6 is incorrect because it does not satisfy the equation.
C: 7 is incorrect because it does not satisfy the equation.
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