Respuesta :

zihinakil

Answer:

2x + 66 + x = 180

3x = 180 - 66

3x = 114

x = 38

Answer: x=38 degrees

Step-by-step explanation:

You know that a line is equal to 180 degrees.

You equation -                           2x+x+66=180

Solve .                                        3x+66=180

Subtract 66 from both sides     3x = 114

divide                                            x=38

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