Question

What ia the value of x in the solution to this system of equationy+2x=-1y=1/2x+4

Answer 1

the system of equation is:

`\begin{gathered} y+2x=-1 \\ y=(1)/(2)x+4 \end{gathered}`

If we want to know the value of x we can replace the secon equation into the first equation so:

`((1)/(2)x+4)+2x=-1`

and we solve for x so:

`\begin{gathered} 2.5x=-1-4 \\ 2.5x=-5 \\ x=-(5)/(2.5) \\ x=-2 \end{gathered}`