5
Answer: ASet 1: Systems Of Equations (Intermediate)
Explanation
PROBLEM
Solve: 5x + 4y = 58, 2x + y = 19. Find x.
Solve: 5x + 4y = 58, 2x + y = 19. Find x.
A.✓ Correct
6
B.
8
C.
7
D.
5
Detailed Explanation
Choice A is the best answer. Using elimination or substitution: x = 6
Why others are wrong:
B: 8 is incorrect because it does not satisfy the equation.
C: 7 is incorrect because it does not satisfy the equation.
D: 5 is incorrect because it does not satisfy the equation.