Question

Select all equations that can result from adding these two equations or subtracting one from the other. x+y= 12 3x - 5y = 4 4x+4y=16 2x-6y=-8 -2x-4y=8 5x-4y=28 0 -2x+6y=8 4x-4y=16

Answer 1

`\begin{gathered} x+y=12 \\ 3x-5y=4 \\ \text{adding the equation we w}ill\text{ get } \\ 3x+x,y-5y,12+4 \\ 4x-4y=16 \\ \\ \text{subtracting it we will get the following} \\ -2x+6y=8 \\ 2x-6y=-8 \end{gathered}`