Q. 1.18 - An Introduction to General, Organic, and Biological Chemistry

Question

Evaluate each of the following:

a.  $-11-\left(-9\right)=\_\_\_$.

b. $34+\left(-55\right)=\_\_\_$.

c. $\frac{-56}{8}=\_\_\_$.

Step-by-Step Solution

Answer

a. The answer is $-11-\left(-9\right)=-2$.

b. The answer is  $34+\left(-55\right)=-21$.

c.  The answer is  $\frac{-56}{8}=-7$.

Part (a) step 1: Given Information

We need to evaluate $-11-\left(-9\right)=\_\_\_$.

Part (a) step 2: Simplify

$11-\left(-9\right)=-11+9=-2$

Part (b) step 1: Given Information

We need to evaluate $34+\left(-55\right)=\_\_\_$.

Part (b) step 2: Simplify

$34+\left(-55\right)=34-55=-21$

Part (c) step 1: Given Information

We need to evaluate $\frac{-56}{8}=\_\_\_$.

Part (c) step 2: Simplify

$\frac{-56}{8}=-7$