Question

What is the value of x
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Answer 1

x=40

Explanation:

We are given all 3 angle equations for the interior angles of a triangle:
x-10

2x-10

2x

We know that all angles inside a triangle must add up to 180 degrees, so let's write an equation:

180=(x-10)+(2x-10)+(2x)

simplify

180=5x-20

add 20 to both sides

200=5x

divide both sides by 5

40=x

So, x=40.

Hope this helps! :)

Answer 2

40

Explanation:

Add all of the angles and set them =180