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Answer: DSet 1: Systems Of Equations (Beginner)
Explanation
PROBLEM
Solve: x + 3y = 28, 5x + 3y = 44. Find x.
Solve: x + 3y = 28, 5x + 3y = 44. Find x.
A.
3
B.
5
C.
2
D.✓ Correct
4
Detailed Explanation
Choice D is the best answer. Using elimination or substitution: x = 4
Why others are wrong:
A: 3 is incorrect because it does not satisfy the equation.
B: 5 is incorrect because it does not satisfy the equation.
C: 2 is incorrect because it does not satisfy the equation.