Respuesta :

Answer:x=2; second option

Step-by-step explanation:

120+10x=140

10x=20

X=2

Answer:

x=2

Step-by-step explanation:

triangles are always equal to 180 degrees and lines are also always equal to 180 degrees

we are given 120 degrees

we subtract 140 to get the measure of the angle inside the triangle

40

120+40= 160

180-160

the third angle is 20 degrees

Also please mark brainly I need it

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