Answer:
Using the following information from the diagram, the value of x is 38.
Step-by-step explanation:
In every triangle, the sum of the all of the angles will add up to 180°. So, in order to find the value of x, then we will add the terms to each other and equal them to 180°.
[tex](x+81)+(x-15)+x=180[/tex]
Combine like terms.
[tex]3x+66=180[/tex]
Subtract 66 on both sides of the equation.
[tex]3x=114[/tex]
Divide 3 on both sides of the equation.
[tex]x=38[/tex]
So, the value of x is 38.
