Respuesta :

Question:

Solution:

Remember that if we have a straight line, then:

According to the above diagram, we have that:

then, we have the following equation:

[tex]25\text{ + 80 + x = 180 }[/tex]

this is equivalent to:

[tex]105\text{ + x = 180}[/tex]

solving for x, we get :

[tex]x\text{ = 180 -105 = 75}[/tex]

thus, we have the following diagram:

then, we have the following equation:

[tex]80\text{ + 75 + x = 180}[/tex]

this is equivalent to:

[tex]155\text{ + x = 180}[/tex]

solving for x, we get:

[tex]x\text{ = 180 -155 = 25}[/tex]

then, we can conclude that the correct answer is:

[tex]x\text{ = 25}[/tex]

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