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Please help me

Okay.. so what would I do to find the answer?

an example would be
x + y = 6
-2x - 2y = -12
- because the second equation = first multiplied by -2

Oh okay, I'll look back at them and see. Thank you so much !!

Yeahh true ... hm. Algebra is my hardest so I dont really know what to do exactly

look at number 3 how do you go from 3x to -9x, and -y to 3y and 14 to -42?

It multiplies by 3 ?

-3*

|dw:1441297958917:dw|

almost - its by -3

so thats the one
get it?

So they multiply it by -3 . So that would be the answer?

yes

yes - you learn something that way.

Oh okay.. now I know this for future references. And yess !

great