Question

Help i dont understand 4x+y=-18x+2y=0

Answer 1

Given:

`\begin{gathered} 4x+y=-1 \\ 8x+2y=0 \end{gathered}`

Sol:.

`\begin{gathered} 8x+2y=0 \\ 8x=-2y \end{gathered}`

Put the value of y in second equation:

`\begin{gathered} 4x+y=-1 \\ 4x-4x=-1 \end{gathered}`