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:
[tex]3x+5=17[/tex]
Now, let's isolate the x variable:
[tex]\begin{gathered} 3x+5=17 \\ 3x=17-5 \\ 3x=12 \\ x=\frac{12}{3} \\ \\ \boxed{\mathrm{x=4}} \end{gathered}[/tex]
Answer:
x = 4.
