Question

....!Help Please!....

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

*-> How do I solve this? O.o

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.

Answer 1

rearrange them
2x + y = 1
y=1-2x...............

4x + 2y = -1
2y=-1-4x
y=-1/2-2x.................
1-2x=-1/2-2x
-2x+2x=-1/2-1
0= -1.5
There is no x value.....

Answer 2

Thank You so much! @eric_d c:

Answer 3

Np :)