How do you find the answer for 3a-1? What's the answer? What's the equation you write down?

The question is not correct ma'am

It is impossible to know the solution of this expression unless you know how much a is worth or some information on the other side of the equation. If you don't know what I mean then I'll explain it a bit more. An equation is 2 expressions that are equal to each other but here I don't know anything about the other side of the equation. For example, an equation like this: 3a - 15= 6 is solvable because I know enough information to solve this.

3a - 15 + 15= 6 + 15

3a = 21

Therefore I can now find out what the answer is but your equation does not have enough information for it to be solved.  

Step-by-step explanation:

the answer to this question is 3/19

step-by-step explanation: