### Home > CCA > Chapter 4 > Lesson 4.2.4 > Problem 4-71

4-71.

Solve these systems of equations using any method. Check each solution, if possible.

One strategy to solve this system of equations is to multiply the bottom equation by

so you can eliminate. After finding

, plug in its value into one of the equations to find the value of.

Because one of the equations above is already solved for

, one strategy to solve this system is to substitute the first equation in forin the second equation.

Use the Equal Values Method.

Refer to part (a).