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Write and solve an equation to find the value of x.
13.
14.
(x-20)
(x-10)°
40°
Sum of angle measures: 360°

Respuesta :

Answer:

x= 175 degrees

Step-by-step explanation:

All angles add up to 360 degrees. Thus:

(x-20) + (x-10) + 40 = 360.

x - 20 + x - 10 + 40 = 360.

Combine like terms.

2x + 10= 360.

thus:

2x= 350

x = 175

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