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13-02-2017
Mathematics

contestada

Solve using substitution.

-5x + y = 16
7x – 6y = 19

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vegaxie000 vegaxie000

13-02-2017

-5x+y=16
y=5x+16
7x-6(5x+16)=19
7x-30x-96=19
-23x-96=19
-23x=(19+96)
-23x=115
x=(115/-23)
x=-5
-5(-5)+y=16
25+y=16
y=(16-25)
y= -9

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