lol im doing the review to my midterm for math, and i completely forgot how to do this, can someone tell me the steps or something? i wish there was more context but this is all i can give.

Answer:
A
Step-by-step explanation:
Two interior angles on the same side of a transversal intersecting 2 parallel lines are supplementary.
121 + x + 70 = 180
191 + x = 180
x = 180 - 191
x = - 11