Question

Solve the problem using ELIMINATION
20x + 2y = 18 10x + y = 9

Answer 1

Infinitely many solutions.

Explanation:

Multiply the second equation by -2, then add the equations together

(20x+2y=18)

−2(10x+y=9)

20x+2y=18

−20x−2y=−18

Add these equations to eliminate x

0=0

Infinitely many solutions.