4
Answer: ASet 4: Systems Of Equations (Intermediate)
Explanation
PROBLEM
Solve: 5x + 5y = 55, 2x + 5y = 43. Find x.
Solve: 5x + 5y = 55, 2x + 5y = 43. Find x.
A.✓ Correct
4
B.
2
C.
6
D.
3
Detailed Explanation
Choice A is the best answer. Using elimination or substitution: x = 4
Why others are wrong:
B: 2 is incorrect because it does not satisfy the equation.
C: 6 is incorrect because it does not satisfy the equation.
D: 3 is incorrect because it does not satisfy the equation.