Question

Solving systems by elimination:

2x + 4y = -4
3x + 5y = -3

Please show me your work so I can do the rest myself. Thanks!

Answer 1

222

Explanation:

2x+4y=-4

3x+5y=-3------> y=-3x-3

5

Answer 2

`2x+4y=-4 (/*3)`

`3x+5y=-3 (/*(-2)) \Rightarrow`


`6x+12y=-12`

`-6x-10y=6 \Rightarrow`


`2y=-6\Rightarrow y=-3`

`y=-3\Rightarrow 2x+4y=-6\rightarrow 2x+4.(-3)=-6 \Rightarrow 2x-12=-6\Rightarrow`

`2x=6\Rightarrow x=3`


`(x,y)=(3,-3)`