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Mathematics 12 Online
Pixel:

http://prntscr.com/iesxfe

Pixel:

@dude

Pixel:

i got a decimal so i got the first part wrong

Pixel:

i got -0.25

dude:

\(5x-y=-21\\ x+y=-3\) Add these together

Pixel:

6x=-24

dude:

Yes, then divide by 6 on both sides

Pixel:

ohmigod im dumb i did 6 / -24 not -24 / 6 *facedesk*

dude:

Haha common mistake, its okay.

Pixel:

-4

dude:

Right, now you substitute it back into one of the equations

Pixel:

-20-y=-21

Pixel:

-y=-1

Pixel:

y=1

dude:

Right

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