Solve the system of equations for : \begin{cases} 2x + 3y = 12 \\ x - y = 1 \end{cases}

Answer and explanation

Correct answer: C. 2

  1. Step 1: From the second equation, express in terms of : .
  2. Step 2: Substitute into the first equation: .
  3. Step 3: Expand and simplify: .
Answer
2.
Why not the others: '1' is an arithmetic error; '3' is the value of (), not ; '4' evaluates .

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