v = -1
First, distribute the equation. This gives you -40-8v=2v-5+25v.
Now, combine like terms. This gives you -40-8v=27v-5.
Now, add 40 to both sides. This gives you -8v=27v+35.
Now, subtract 27v from both sides. This gives you -35v=35.
Now, divide -35 on both sides. This gives you v=-35/35.
v=-1.