Answer : x = o
The question tells us that these two triangles are similar, so we can automatically apply the same rules that are on the right triangle onto the left triangle. On the right triangle, the bottom side is 2 times bigger than the side on the left. We then apply this rule to the triangle on the left.
We make the equation 2(5x+2) =x+4
Solving this equation gives us x = 0
