Respuesta :

Answer:

Step-by-step explanation:

2x = x+30

subtract x on both sides

x = 30

As it is a isosceles triangle opposite sides are equal.

[tex]\\ \sf\longmapsto 2x=x+30[/tex]

[tex]\\ \sf\longmapsto 2x-x=30[/tex]

[tex]\\ \sf\longmapsto (2-1)x=30[/tex]

[tex]\\ \sf\longmapsto x=30[/tex]