Q7. - Algebra 1

Question

Find each sum or difference.

$-11.5+8.1$

Step-by-Step Solution

Answer

The value of expression is –3.4.

Step 1. Concept of addition and subtraction.

Two numbers with similar signs get added and the resulting number carries the similar sign.

Two numbers with opposite signs get subtracted and the resulting number carries the sign of the larger number.

Step 2. Subtract a smaller value from a larger one.

$\begin{array}{l}\underset{¯}{\begin{array}{l}11.5\\ -8.1\end{array}}\\ 3.4\end{array}$

Step 3. By using the concept of addition and subtraction.

$\begin{array}{l}-11.5+8.1\\ =-3.4\end{array}$

Therefore, the sum is –3.4.