PLEASE HELP !!!!!!!! Answer correctly !!!!!!!!! Will be marking Brianliest !!!!!!! URGENT URGENT !!!!!!!!!!!!!!!

Answer:
ummm ummm i dont know
Step-by-step explanation:
Answer:
B (-5,5)
Step-by-step explanation:
-12+a/2=-6
-7+a=-12
a=-12+7
a=-5
-3+b/2=1
-3+b=2
b=2+3
b=5