12-12-2016
Mathematics

contestada

HELPFor the system below solve using linear combinations method 4x-7y=-2 and 12x-21y=-42

Respuesta :

12-12-2016

No solution

cz

12x-21y=-42 -----> /3 (divided by 3 )
4x-7y=14 ------ (2)
4x-7y=-2 ------- (1)

how 4x-7y =14 an = -2

and if we
(2)-(1)
0=12
#

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