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

2x + y = 1
4x + 2y = -2

A. x = 0

B. x = 2

C. There is no x value, as there is no solution.

D. 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 = -2

 A. x = 0

B.  x = 2

 C. There is no x value, as there is no solution.

D.  x can be any value as, there is an infinite number of solutions.

kohai · Answer

So for this, you can take the first equation and use y=-2x+1, and then you plug it into the second equation.

4x+2(-2x+1)=-2 and solve for x.

anonymous · Answer

how exactly would i do that? sorry im new to this

kohai · Answer

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