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1

Set 5: Systems Of Equations (Beginner)

Explanation

Answer: A

PROBLEM

Solve: x + 5y = 20, 3x + 5y = 30. Find y.

Solve: x + 5y = 20, 3x + 5y = 30. Find y.

A.

3

✓ Correct
B.

1

C.

4

D.

2

Detailed Explanation

Choice A is the best answer. Using elimination or substitution: y = 3

Why others are wrong:
B: 1 is incorrect because it does not satisfy the equation.
C: 4 is incorrect because it does not satisfy the equation.
D: 2 is incorrect because it does not satisfy the equation.
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