To solve the linear equation \( x - 2 = 4 \), follow these steps:
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Add 2 to both sides of the equation to isolate \( x \):
\[ x - 2 + 2 = 4 + 2 \]
This simplifies to:
\[ x = 6 \]
So, the solution to the equation \( x - 2 = 4 \) is
\[ \boxed{6}. \]
If you meant the second equation \( \frac{x}{-2} = 4 \), you would solve it as follows:
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Multiply both sides by -2 to eliminate the fraction:
\[ x = 4 \cdot (-2) \]
This simplifies to:
\[ x = -8 \]
So, the solution to the equation \( \frac{x}{-2} = 4 \) is
\[ \boxed{-8}. \]