Question

Help with math I have to have 20 characters or more to ask question...

Answer 1

Answer:

x=$-\frac{113}{3}$

Step-by-step explanation:

First, we need to solve the angle inside the triangle. That would be 55+40+angle measure=180

angle measure=85°

Now that we know that, we can solve for x by setting 85-3x-18 equal to 180° because these two values form a linear pair which is 180°.

Let's use some simple algebra to solve for x:

85-3x-18=180

67-3x=180

-3x=113

x=$-\frac{113}{3}$ or about -37.67

Hope this helps!! :)