Question

Define a variable and write an expression for the phrase.

Answer 1

A variable is an unknown number that will change or variable depending on the equation or math problem. Usually a variable is represented by x, y or z.
When the correct number for the variable or variables are plugged into the problem, it will make the problem (or equation) a true statement.
if 8-x=2
Than "x" can only equal 6
8-6=2 becasue no other number will make this a true statement