How can you tell if an equation has one, zero, or infinite solutions? For example:

-4 (v + 3) = - 12 - 4v

Simplifying

-4v + 2v = - 12

Combine like terms: - 4v + 2v = - 2v

-2v = - 12

Solving

-2v = - 12

Solving for variable 'v'.

Move all terms containing v to the left, all other terms to the right.

Divide each side by '-2'.

v = 6

Simplifying

v = 6