Question

HELP!!!!!!!!!!!!!
Solve the system of equations.

3x + 3y = –6
–x + y = 0

Answer 1

ponit

Answer 2

Solve by elimination

Answer 3

3x+3y= -6> 3x+3y=-6
3(-x+y=0) > -3x+3y=0
Add them> 6y= -6> y= -1
Plug y into the equation
-x-1=0
x=-1

Answer 4

yeeeeeeessssssssssss

Answer 5

Dont give the answer

Answer 6

I don't understand how to solve it.

Answer 7

Hockeychick gave you the answer...

Answer 8

x=-1

Answer 9

I know but I want to know how to solve it.

Answer 10

oh i tried writing the steps, you have to use elimination which means you need to get either x or y to have the same number in front of it in the equation, so i multiplied the second equation by 3 so you could eliminate x

Answer 11

Why 3?

Answer 12

@hockeychick23

Answer 13

because you want to eliminate either x or y in the equation, so in order to eliminate x both equations need to have the same coefficient in front of them (in this case it's 3)

Answer 14

Okay so when you plug them in what do you add? You lost me on that part lol

Answer 15

@hockeychick23

Answer 16

so 3x+3y= -6 and -3x+3y=0, so add like terms, 3x+ -3x which will give you 0 and 3y+3y will give you 6y

Answer 17

ohh no I get that part okay, once you get that then what?

Answer 18

@hockeychick23

Answer 19

ok so now you have 0x+6y=-6

Answer 20

so the 0x doesn't matter because anything times 0 is 0, so now you have 6y= -6