we have that
Linear equations, are equations with only one variable
example
5x+2=12
that is an example of a linear equation
we have only one variable (variable x)
we need to solve for x
step 1
subtract 2 on both sides
5x+2-2=12-2
combine like terms
5x+0=10
5x=10
Divide by 5 on both sides
5x/5=10/5
simplify
x=2
Verify the solution
substitute the value of x in the original expression
5(2)+2=12
10+2=12
12=12 -----> the equation is true
that means
the value of x=2 is a solution of the linear equation
we have the linear equation
-288=9x
this is an example of one step equation (because in one step you find out the solution)
step 1
Divide by 9 on both sides
-289/9=9x/9
x=-289/9