dready04 dready04

23-01-2017
Mathematics

contestada

Find the solution to the system of equations by substitution
{x+y=6
{2x-y= - 12

Respuesta :

tyleron tyleron

23-01-2017

X+Y=6. Y=6-X 2X-(6-X)=-12 2X-6+X=-12. 3X=-6. X=-2. Y=6-(-2). Y=8

SOLUTION: { (x,y) | (-2,8) }

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