Ill give a medal if you can solve this
Solve the system of equations by substitution. What is the solution for x?

2x + y = 1
4x + 2y = −2

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

Ill give a medal if you can solve this
Solve the system of equations by substitution. What is the solution for x?

2x + y = 1
4x + 2y = −2

 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.

anonymous · Answer

You have a System of linear equations. So to solve this, using substitution, then you need to isolate x or y in the first equation. And insert the value  into the 2nd equation.
$$2x+y=1<=>y=1−2x$$
Now I insert the value for y:
$$4x+2(1−2x)=−2$$
Now you have one equation with one variable. Can you solve x from here?