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Compute. \( \begin{array}{r}18.8+(-7.5)=\square \\ 3.9-36.24=\square \\ \hline\end{array} \)

Ask by Cook Byrd. in the United States
Mar 14,2025

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Answer

\[ 18.8 + (-7.5) = 11.3 \\ 3.9 - 36.24 = -32.34 \]

Solution

**Step 1. Compute \(18.8+(-7.5)\):** \[ 18.8 + (-7.5) = 18.8 - 7.5 = 11.3 \] **Step 2. Compute \(3.9-36.24\):** \[ 3.9 - 36.24 = -(36.24 - 3.9) = -32.34 \] **Final Answers:** \[ \begin{array}{r} 18.8+(-7.5)=11.3 \\[6pt] 3.9-36.24=-32.34 \\[6pt] \end{array} \]

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To solve the first equation, \( 18.8 + (-7.5) \), you can think of it as subtracting 7.5 from 18.8. So, \( 18.8 - 7.5 = 11.3 \). Thus, \( \square = 11.3 \). For the second equation, \( 3.9 - 36.24 \), you are essentially subtracting a larger number from a smaller one. This results in a negative number. Performing the calculation gives \( 3.9 - 36.24 = -32.34 \). So, \( \square = -32.34 \). Putting it all together, we have: \( \begin{array}{r} 18.8 + (-7.5) = 11.3 \\ 3.9 - 36.24 = -32.34 \\ \hline\end{array} \)

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