Question

The value of the variable so that the formula presented in the balance is fulfilled is

Answer 1

Hello!

First, let's analyze the image and write important information;

• Left: x+x+x+5 = 3x+5

,

• Right: 15+1+1 = 17

Notice that the scale is balanced, so it means that we will equalize these weights:

`3x+5=17`

Now, let's isolate the x variable:

`\begin{gathered} 3x+5=17 \\ 3x=17-5 \\ 3x=12 \\ x=(12)/(3) \\ \\ \boxed{\mathrm{x=4}} \end{gathered}`

Answer:

x = 4.