Main content
Course: Algebra 1 (Illustrative Mathematics) > Unit 4
Lesson 2: Solving systems by substitutionSystems of equations with substitution
You might need: Calculator
If you're seeing this message, it means we're having trouble loading external resources on our website.
If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked.