Respuesta :

Step-by-step explanation:

we know,

sum of all angles on a straight line is 180°.

so according to it,

x + 2x + 3x = 180

6x = 180

x = 180/6 = 30

x = 30°

therefore, value of x is 30°.

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Answer:

See below, please.

Step-by-step explanation:

x+2x+3x=180

So, 6x=180

x=30