Solve the system of equations by substitution. What is the solution for x?

2x + y = 1
4x + 2y = −1

x = 0

x = 2

There is no x value as there is no solution.

x can be any value as there is an infinite number of solutions.

Question

Solve the system of equations by substitution. What is the solution for x?

2x + y = 1
4x + 2y = −1

x = 0

x = 2

There is no x value as there is no solution.

x can be any value as there is an infinite number of solutions.

aroub · Answer

2x + y = 1
4x + 2y = −1 

y=-2x+1 

4x+2(-2x+1)=-1
4x-4x+2=-1
0=-3 

There is no x value as there is no solution.