Q. 1.17 - An Introduction to General, Organic, and Biological Chemistry

Question

Evaluate each of the following:

a. $15-\left(-8\right)=\_\_\_$

b. $-8+\left(-22\right)=\_\_\_\_$

c. $4\times \left(-2\right)+6=\_\_\_$

Step-by-Step Solution

Answer

a. The answer is $15-\left(-8\right)=$$23$.

b. The answer is   $-8+\left(-22\right)=$$-30$.

c. The answer is  $4\times \left(-2\right)+6=-2$.

Part (a) step 1: Given Information

We need to evaluate $15-\left(-8\right)=\_\_\_\_$.

Part (a) step 2: Simplify

$15-\left(-8\right)=15+8=23$

Part (b) step 1: Given Information

We need to evaluate $-8+\left(-22\right)=\_\_\_\_$.

Part (b) step 2: Simplify

$$\begin{gathered} -8+\left(-22\right)=-8-22 \\ =-30 \end{gathered}$$

Part (c) step 1: Given Information

We need to evaluate $4\times \left(-2\right)+6=\_\_\_$. 

Part (c) step 2: Simplify

$$\begin{gathered} 4\times \left(-2\right)+6 \\ =-8+6 \\ =-2 \end{gathered}$$