To simplify the expression \( 1.567 - 11.83 + 2.3 \), follow these steps:
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Combine \( 1.567 \) and \( 2.3 \): \[ 1.567 + 2.3 = 3.867 \]
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Subtract \( 11.83 \) from the result: \[ 3.867 - 11.83 = -7.963 \]
Thus, the simplified expression is: \[ \boxed{-7.963} \]