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To solve this problem, we'll follow these steps:
Now, let's work through each step:
Step 1: From the equation , solve for :
Step 2: Substitute into the second equation .
Simplify:
Combine like terms:
Step 3: Solve for :
Step 4: Substitute back into the expression for :
Therefore, the solution to the system of equations is and .
This matches choice 1.
\( \begin{cases} x+y=8 \\ x-y=6 \end{cases} \)
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