6
Answer: BSet 1: Systems Of Equations (Advanced)
Explanation
PROBLEM
Solve: 3x + 4y = 54, 2x + 4y = 44. Find x.
Solve: 3x + 4y = 54, 2x + 4y = 44. Find x.
A.
12
B.✓ Correct
10
C.
8
D.
11
Detailed Explanation
Choice B is the best answer. Using elimination or substitution: x = 10
Why others are wrong:
A: 12 is incorrect because it does not satisfy the equation.
C: 8 is incorrect because it does not satisfy the equation.
D: 11 is incorrect because it does not satisfy the equation.