Question

What is the value of x in the triangle?

Answer 1

x=40

Explanation:

The angles inside a triangle must add to 180 degrees, therefore

65+75+x=180

Combine like terms by adding 65 and 75

140+x=180

We want to solve for x. To do this, we need to get x by itself. 140 is being added to x. To undo this, subtract 140 from both sides.

140-140+x=180-40

x=40

Answer 2

x = 40

Explanation:

The sum of the angles of a triangle is 180

65+75+x = 180

Combine like terms

140+x= 180

Subtract 140 from each side

140-140+x=180-140

x = 40