Question

What 10000 ÷ 400 x =55

Answer 1

Solving an equation

We want to find the x value that makes the following equation true

`(10,000)/(400)x=55`

In order to solve the equation for x we want to "leave alone" the a on one side of the equation. In order to do that we just have to remember one simple rule: what we do on one side of the equal "=" is what we must do on the other side.

Step 1: taking 400 to the right side

`\begin{gathered} (10,000)/(400)x=55 \\ \downarrow \\ 10,000x=55\cdot400 \end{gathered}`

Step 2: taking 10,000 to the right side

`\begin{gathered} 10,000x=55\cdot400 \\ \downarrow \\ x=(55\cdot400)/(10,000) \end{gathered}`