royfieldsouamjo royfieldsouamjo

14-08-2017
Mathematics

contestada

Please help me!! find the solution of this system of equations -x + 5y=-18 5x - 9y= 10

Respuesta :

kphung76127 kphung76127

14-08-2017

Multiply the first equation by 5 to use the elimination method.

-5x+25y=-90
5x-9y=10

16y=-80
y=-5

Plug this y value into one of the original equations.

-x+5(-5)=-18
-x-25=-18
-x=7
x=-7

Final answer: (-7,-5)

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