briannaburgett briannaburgett

06-02-2020
Mathematics

contestada

-x-2y=9

x+4y=9

elimination

Respuesta :

blerllesh blerllesh

06-02-2020

You add the second equation to the first which eliminates x and leaves you with 2y=18 so you divide 18 by 2 which is 9 so y=9 now you fill in one question for y so do x+4(9)=9 you get x+36=9 now subtract 36 from 9 and you get -27 so x=-27 and y=9

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