We can solve this problem by using the known value (115) to solve for the angle parallel to the equation.
To find the solve for the angle to the exact right of 115, subtract 115 from 180. This works because 115 and the unknown angle form to make a straight line, which is 180 degrees.
180-115=65
Now, since it is parallel, we know that 5x+5=65 degrees.
Solve the equation.
Subtract 5 on both sides.
5x=60
Divide both sides by 5 to isolate x.
5x=13
The value of x is 13.
Hope this helps!