To solve the equation \( 0.2x - 2.15 = -8.27 \), follow these steps:
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First, isolate the term with \( x \) by adding \( 2.15 \) to both sides of the equation:
\[ 0.2x - 2.15 + 2.15 = -8.27 + 2.15 \]
Simplifying this gives:
\[ 0.2x = -6.12 \]
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Next, solve for \( x \) by dividing both sides by \( 0.2 \):
\[ x = \frac{-6.12}{0.2} \]
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Performing the division:
\[ x = -30.6 \]
Therefore, the solution of the equation \( 0.2x - 2.15 = -8.27 \) is \( \boxed{-30.6} \).