Question

X+y=3 and 2x +3y=-4 need to show the first two steps

Answer 1

`\begin{gathered} x+y=3 \\ 2x+3y=-4 \end{gathered}`

1. Solve y in the first equation:

`\begin{gathered} \text{subtract x in both sides of the equation:} \\ x-x+y=3-x \\ \\ y=3-x \end{gathered}`

2. Substitute the y in the second equation by the value you get in first step:

`2x+2(3-x)=-4`

Then, for the given options the one that shows the correct first two steps is option 3: When you solve for you get y=3-x so then... 2x+3(3-x)=-4