7
Answer: ASet 3: Systems Of Equations (Intermediate)
Explanation
PROBLEM
Solve: 5x + 2y = 38, 5x + 5y = 50. Find x.
Solve: 5x + 2y = 38, 5x + 5y = 50. Find x.
A.✓ Correct
6
B.
7
C.
4
D.
5
Detailed Explanation
Choice A is the best answer. Using elimination or substitution: x = 6
Why others are wrong:
B: 7 is incorrect because it does not satisfy the equation.
C: 4 is incorrect because it does not satisfy the equation.
D: 5 is incorrect because it does not satisfy the equation.