Questions: Compute. 18.8+(-7.5)= 6.7-39.31=

Transcript text: Compute. \[ \begin{array}{r} 18.8+(-7.5)= \\ 6.7-39.31= \end{array} \]

Solution

Solution Approach

For the first expression \(18.8 + (-7.5)\), we need to add a positive number and a negative number. This is equivalent to subtracting the absolute value of the negative number from the positive number.
For the second expression \(6.7 - 39.31\), we need to subtract a larger number from a smaller number, which will result in a negative number.

Step 1: Compute \( 18.8 + (-7.5) \)

To compute the first expression, we have: \[ 18.8 + (-7.5) = 18.8 - 7.5 = 11.3 \]

Step 2: Compute \( 6.7 - 39.31 \)

For the second expression, we calculate: \[ 6.7 - 39.31 = -32.61 \]