Question

How do I solve this problem?

Answer 1

to get angle DTO you use supplementary and subtract 70 from 180 and get 10. to get X you see that the angle is 70 and since it's vetical it would equal 70 too so you just mutiply 3×25 and get 75 then subtract 5 and lastly get 70.

Answer 2

Because a horizontal line is 180 deg.
Use 180 - 70 to get have of DTO Angle deg.
DTO = 110 deg.
70 is across 3x -5
The 3x - 5 is opposite of 70 so the angle is also 70 deg.
So 3x - 5 = 70

Isolate x
Add 5 to both sides of the equation

Should look like this now
3x = 75
Divide by 3 on both sides
Now x = 25