Question 33 When solving a system of two linear equations using the substitution method, what are you looking to do exactly?

Step 1 ：Solve one of the equations for one variable

Step 2 ：Substitute this expression into the other equation

Step 3 ：Solve the resulting single-variable equation

Step 4 ：Substitute the value of this variable back into one of the original equations to find the value of the other variable