3x-6y=12
2x+6y=-12

Solve by using elimination

Question

3x-6y=12
2x+6y=-12

Solve by using elimination

anonymous · Answer

@nincompoop

anonymous · Answer

@amistre64

amistre64 · Answer

what are your thoughts?

anonymous · Answer

i have no idea im so confused

anonymous · Answer

i forgot how to do it

wolf1728 · Answer

Pandabear78693 - so you were taught how to do these?

amistre64 · Answer

elimination involves adding the equations together so that one of the terms zeros out ...

anonymous · Answer

yes i was taught to do this but i forgot how to do it @wolf1728

amistre64 · Answer

do the equations have a similar term to them that will cancel when added up?

anonymous · Answer

3x-6y=12
+
2x+6y=-12
_________
5x=0
x=0
(Since the y's already canceled each other, I didn't have to multiply anything.)
Now plug the x-value in both equation and see if it works:
3(0)-6y=12
-6y=12
y=-2
2(0)+6y=-12
6y=-12
y=-2
So the answer is (0,-2) I think 

Hope this helps!

anonymous · Answer

so i will add 3x and 2x

amistre64 · Answer

you will add all like terms, the idea is to get one of the terms to cancel itself out i the process.

amistre64 · Answer

recall that a-a = 0; known as the inverse of addition property or some such

anonymous · Answer

ooo okk

anonymous · Answer

thx 4 da medal

anonymous · Answer

Thanks for helping @amistre64  and @Peaches15  btw ur welcome

amistre64 · Answer

good luck

anonymous · Answer

thank you thanks for explaining it @amistre64