A number that makes an equation true is its solution.
Any number that makes an equation true is a 'solution of an equation'. it is a solution
A solution or root makes a true statement when substituted in an equation.
It's callled the "solution" of the equation.
It is one of a set of solutions.
you have to solve the actual equation in order to answer this about your variable
not always but most of the time yes
The root of any equation is a number which ... when substituted for the variable ...makes the equation a true statement.