Identify the variable in the expression 5a-2
5a-2In order to identify the variable, we need to set the equation equal to zero.5a-2=0And then, we solve for the variable.5a-2=05a=2a=2/5The variable a is equal to 2/5
In 5a - 2, a is the variable. 5 is the cofficient of the variable a.