lolo3977 lolo3977

05-09-2018
Mathematics

contestada

-8x-2y=30
solve each system by elimination
-2x+4y=-24

Respuesta :

shinberg shinberg

06-09-2018

-8x-2y=30

-4(-2x+4y=-24) = 8x - 16y = 96

-8x + 8x - 2y - 16y = 30+96

-18y = 126

divide -18 on both sides

y= -7

-8x - 2(-7) = 30

-8x + 14= 30

-8x=44

divide -8 on both sides

x= -5.5

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