B. -5
The two straight lines are parallel, and the angles are at the same places (below and to the right of the diagonal line). The two angles must be the same, and to get 65 from x + 70, x has to be -5.
Answer: -5
Step-by-step explanation:
The two angles are equal because of the parallel lines. So...
x+70=65
Subtract 70 from both sides.
x = -5
