To solve the equation \( x - 3.41 = -19 \) for the value of \( x \), you should add \( 3.41 \) to both sides of the equation.
Here's how it looks:
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Start with the equation:
\( x - 3.41 = -19 \) -
Add \( 3.41 \) to both sides:
\( x - 3.41 + 3.41 = -19 + 3.41 \) -
This simplifies to:
\( x = -15.59 \)
So, the correct operation to perform on both sides of the equation is adding 3.41.