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08-04-2015
Mathematics

contestada

solve the system

x - 2y = -6
3x + y = -4

Respuesta :

08-04-2015

{x-2y=-6

{3x+y=-4 /*2

{x-2y=-6

{6x+2y=-8 (+)

7x=-14 /:7

x=-2

3x+y=-4

3*(-2)+y=-4

-6+y=-4

y=2

Solution: (-2; 2)

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