7
Answer: ASet 3: Systems Of Equations (Advanced)
Explanation
PROBLEM
Solve: x + 3y = 26, 4x + 5y = 55. Find x.
Solve: x + 3y = 26, 4x + 5y = 55. Find x.
A.✓ Correct
5
B.
6
C.
4
D.
3
Detailed Explanation
Choice A is the best answer. Using elimination or substitution: x = 5
Why others are wrong:
B: 6 is incorrect because it does not satisfy the equation.
C: 4 is incorrect because it does not satisfy the equation.
D: 3 is incorrect because it does not satisfy the equation.