Respuesta :

a-b = b-3 = 6

Now, we know that b-3 =6

b-3 = 6 
  +3   +3
b=9

So, we only know that b = 9

Now, we apply it to one equation to solve for a.

a-9 = 6=6
a-9=6
  +9  +9

a= 9+6
a= 15

Final answer: The value of a is 15.

Now we shall check our work. 

15-9 = 9 - 3 = 6
6=6=6

Our answer a= 15 is correct!
Aaby
6+3=9 so b is 9. 6+9=15 so a is 15. 15-9=6=9-3=6
The value of a is 15.