What you’ll learn
Solve by elimination. Enter a valid one-variable result or the final system solution.
Key idea
Add or subtract the whole equations so one variable coefficient becomes zero.
Worked example
Solve by elimination. Enter a valid one-variable result or the final system solution.
A: x + y = 6 B: x - y = 2
- (4, 2)
Answer: (4, 2)
Quick Check
Analyze the proposed student response. Choose Correct or Incorrect.
A: x + y = -7 B: x - y = 1 Student response: (-3, -4)