Question

If the first step of solving a system of equations by subsistution is to solve one equations for one of the variables, how do choose which variable to solve for??
Pls help I’m so confused?

Answer 1

Choose two equations and use them to eliminate one variable.Choose another pair of equations and use them to eliminate the same variable.Use the resulting pair of equations from steps 1 and 2 to eliminate one of the two remaining variables.