Is v = 5 a solution to the equation ?
Plug v = 5 into the equation and simplify.
Is m=1 a solution of the equation m-3=7?
A number is a solution to an equation if plugging it in results in a true statement.
Plug m=1 into the equation and simplify.
, so, m=1 is not a solution to the equation m-3=7.