Question

1=1-3v-6 how do I answer this

Answer 1

Add 6 to both side canceling out the negative 6.
subtract 1 from both sides canceling out the 1.
Divide -3v  and the other side  by -3.
Thats your answer.

 1=1-3v-6
+6        +6

 7=1-3v
-1 -1

6=-3v
_    _
-3  -3

-3=v