Respuesta :

I think you mean 2a * 3b=12 so I am just going to use that formula.
3b - 4 = 2 
3b = 6
b = 2

2a * 3b = 12
2a * 3*2 = 12
2a * 6 = 12
2a = 2
a = 1

the value of a is 1