Respuesta :

Make them equal to each other.
x+40=3x-10
50=2x
x=25

Answer:

The value of x is:

                              x=25

Step-by-step explanation:

As we know that if a transversal divides the two parallel lines then the corresponding exterior angles have the same measure.

Here after looking at the two angles which are marked we observe that they make a pair of corresponding exterior angles.

i.e. both are equal.

i.e.

[tex]x+40=3x-10\\\\i.e.\\\\3x-x=40+10\\\\i.e.\\\\2x=50\\\\i.e.\\\\x=\dfrac{50}{2}\\\\i.e.\\\\x=25[/tex]

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