How do you solve #3=10+v#?

1 Answer
Apr 23, 2017

Answer:

#v=-7#

Explanation:

Start with your equation: #3=10+v#.

You can subtract any value from one side provided that you subtract the same value from the other side. In order to isolate the #v#, we should subtract both sides by #10#.

So, #3-10=10+v-10.#

Simplify the left-hand side: #3-10=-7#. For the right-hand side, move #+v# to the left to get #+v+10-10#. The #10#'s cancel out to leave #v#.

We are left with #-7=v#. We can swap both sides of an equation to get #v=-7#.