Well the difference is -43 so I'm pretty sure it's gonna be A
They are congruent because of the angles, which means the congruency reason should be SAS.
Answer:
Trying to solve this leads to an absurdity, so No Solution.
Step-by-step explanation:
5x+12=5x−7
Lets attempt to solve:
Subtract 5x from both sides
5x - 5x + 12 = 5x - 5x - 7
0 + 12 = 0 - 7
12 = -7
This is absurd so there is no solution.
The answer is 9.
Hope I helped