MatthewMorgan182 MatthewMorgan182

11-09-2015
Mathematics

contestada

x+y=12
x-y=2

Solve by elimination

Respuesta :

11-09-2015

[tex]x+y=12 \\ \underline{x-y=2} \\ x+x=12+2 \\ 2x=14 \\ x=\frac{14}{2} \\ x=7 \\ \\ x+y=12 \\ 7+y=12 \\ y=12-7 \\ y=5 \\ \\ \boxed{(x,y)=(7,5)}[/tex]

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