To solve the equation \(-2x + 902 = 1,518\), we can follow these steps:
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Isolate the term with \(x\) by subtracting 902 from both sides of the equation:
\[-2x = 1,518 - 902\]
\[-2x = 616\]
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Now, divide both sides by -2 to solve for \(x\):
\[x = \frac{616}{-2}\]
\[x = -308\]
Among the provided options, the best estimate for \(x\) would be \(-300\).
So the correct answer is:
−300