Question

What is the value of x?

Answer 1

Here,
X+x+81+x-15=180 (being sum of triangle =180)
3x+66=180
3x=180-66
3x=114
X=114/3
X=38
The value of x is 38.

Answer 2

Using the following information from the diagram, the value of x is 38.

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°.

`(x+81)+(x-15)+x=180`

Combine like terms.

`3x+66=180`

Subtract 66 on both sides of the equation.

`3x=114`

Divide 3 on both sides of the equation.

`x=38`

So, the value of x is 38.