what is a ?
9a-3(a-6)=-6

Question

what is a ?
9a-3(a-6)=-6

kohai · Answer

You have to isolate a. Can you do that?

anonymous · Answer

I've tried ton of numbers i can't find a

kohai · Answer

Ok. So you first have to distribute 3(a-6). What does that look like?

anonymous · Answer

how would i do that you don't have to tell me the answer

kohai · Answer

So basically, you multiply each thing in the parenthesis. 
So 3(a-6) would be, 
3*a - 3*6. Does that make sense?

anonymous · Answer

but i don't  know what a is so how am i suppose to solve a problem that i don't know how to solve

kohai · Answer

I'm getting there. I'm helping you through it. Do you understand the distribution that I just did?

anonymous · Answer

no.

kohai · Answer

|dw:1422301245847:dw|

You multiply the 3 with everything inside the parenthesis. So you get 3a - 18. 

So your new equation will look like this,
9a-3a-18=-6. How do you simplify this?