Question

Solve the following equation for x to find the total number of people who became members of a social networking site for a certain month:

x = 0.8x + 72
How many people became members of the site that month?

Answer 1

360 people became members of the site that month

Explanation:

Solve the following equation for x

`x = 0.8x + 72`

To solve for x we need to get 'x' alone

`x = 0.8x + 72`

Subtract 0.8x on both sides

`x-0.8x = 0.8x-0.8x + 72`

`0.2x=72`

Divide both sides by 0.2

`x=360`

Answer 2

The total number of people who became members of the site that month is 360....

Explanation:

Let x represents the total number of people who became members of the site that month.

We have the equation:

x = 0.8x+72

Combine the like terms:

x-0.8x= 72

0.2x =72

Now divide both sides by 0.2

0.2x/0.2 = 72/0.2

x= 360 people

This shows that the total number of people who became members of the site that month is 360....