### Home > CCA > Chapter 4 > Lesson 4.2.5 > Problem 4-83

4-83.

Candice is solving this system:

She notices that each equation contains the expression

. Can she substitute for ? Why or why not? Try it for yourself. Does it work?

Substitute

for in the second equation to create one equation with one variable. Then solve for and.

Remember to check your answers.

; use this information to solve for.