Answer:
X=50
Explanation:
Because the top and bottom angles are formed by 2 intersecting lines, we know that the angles are equivalent to each other via the vertical angle theorem. This allows us to set the following equation:
[2(x+10)]=(3x-30)
You would then distribute the 2 on the left side to get
2x+20=3x-30
Then, simply combine like terms.
20+30=3x-2x
Simplify.
50=x
The answer is therefore 50.