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5

Set 1: Systems Of Equations (Beginner)

Explanation

Answer: A

PROBLEM

Solve: 2x + 3y = 28, 2x + 2y = 20. Find y.

Solve: 2x + 3y = 28, 2x + 2y = 20. Find y.

A.

8

✓ Correct
B.

10

C.

9

D.

7

Detailed Explanation

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

Why others are wrong:
B: 10 is incorrect because it does not satisfy the equation.
C: 9 is incorrect because it does not satisfy the equation.
D: 7 is incorrect because it does not satisfy the equation.
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