riveraj15 riveraj15

24-06-2016
Mathematics

contestada

Solve by the substitution method. Show your work for full credit.
y = 3x – 12
2x – 3y = -13

Respuesta :

24-06-2016

Hello
y=3x-12
2x-3(3x-12)=-13
==>2x-9x+36=-13
==>-7x=-49
==>x=7
y=3*7-12
==>y=9

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