Question

-2x + 2y = 2 -4y - 2x = -22 solve by elimination method

Answer 1

Just like the last problem follow the same steps

Answer 2

i dont get the steps

Answer 3

Line up the equations like this
-2x + 2y = 2
-2x - 4y =-22

we want to subtract one equation to the other in order to cancel out a variable. It can be either x or y Which one do you want to pick?

Answer 4

x

Answer 5

great the first equation has a -2x and so does the second one so in order to cancel the -2x from the second we have to subtract the first equation to the second like this


-2x + 2y = 2
-2x - 4y =-22


-2x+2x - 4y-2y =-22-2

and that equals

0 - 6y =-24

simplify to

- 6y =-24



Yay now we want to know what y is so we divide both sides by -6. Can you do that from the last equation?

Answer 6

so i divide -6 into -24 and get 4 so y=4 then i plug 4 in everytime i see a y Right?

Answer 7

once you know x or y you can just plug that value in into whatever equation you want and solve for the other x or y that you dont have.