Algebra-1

The correct answer is C: "get either variable by itself in one equation."

In the substitution method, we solve a system of equations by isolating one variable in one equation and then substituting it into the other equation. This allows us to eliminate one variable and solve for the remaining variable.

Let's consider the other options and explain why they are not the first step in the substitution method:

A. "Get x by itself" and B. "Get y by itself": These options suggest isolating one specific variable from the start. However, in the substitution method, we can choose to isolate either variable, depending ...