Substitute \( x = 3 \) into the equation \( 3x - 2y = 15 \):
3(3) - 2y = 15
Simplify:
9 - 2y = 15
Isolate \( y \) by subtracting 9 from both sides:
-2y = 6
Solve for \( y \) by dividing both sides by -2:
y = -3
Final values:
x = 3, \; y = -3
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