Answer:
A=12 ; B= 13
Step-by-step explanation:
37-25= 12
This '12' is A, because there are TWO A's in the first equation and ONE A in the Second equation making the First A/B cancel out leaving ONE a left with the number 12. After you apply A=12 in the second equation you will find B is 13. You can check this by substituting for the first equation
A=12 ; B=13