Set 2: Systems Of Equations (Beginner)

**Choice B is the best answer.** Using elimination or substitution: y = 6

Explanation

Answer: B

PROBLEM

Solve: 5x + 5y = 45, 3x + 2y = 21. Find y.

✓ Correct

Detailed Explanation

Choice B is the best answer. Using elimination or substitution: y = 6

Why others are wrong:

A: 4 is incorrect because it does not satisfy the equation.

C: 8 is incorrect because it does not satisfy the equation.

D: 7 is incorrect because it does not satisfy the equation.