Q69. - Algebra 1

Question

In 2006, 57 million American adults read online blogs. However, 45 million fewer American adults say that they maintain their own blog. How many American adults maintain a blog?

Step-by-Step Solution

Answer

The number of American adults maintaining a blog is 12 million.

Step 1. Given information.

American adults reading online blogs = 57 million.

American adults maintaining online blogs are 45 million lesser than American adults reading online blogs 

Step 2. Introduce the variable.

Consider x million American adults maintain online blogs.

Step 3. Write the equation.

Since a total of 57 million American adults read online blogs.

Therefore,

$x+45=57$

Step 4. Solve the equation.

Take the equation $x+45=57$.

Subtract 45 from both sides of the equation.

$$\begin{gathered} x+45-45=57-45 \\ x=57-45 \end{gathered}$$

So,

$x=12\text{\hspace{0.17em}\hspace{0.17em}million}$