Question

Solve for x in the following figure and choose the appropriate result.

Answer 1

45

Explanation:

180-45=135

135/3=45

Answer 2

`x=45`

Explanation:

In a triangle, all of the interior angles add up to 180 degrees. Knowing this, we can construct the following equation and solve for x:

`x+2x+45=180\\3x+45=180`

Subtract both sides by 45

`3x+45-45=180-45\\3x=135`

Divide both sides by 3

`(3x)/(3) =(135)/(3) \\x=45`

I hope this helps!