joanis0412 joanis0412

20-10-2016
Mathematics

contestada

1.2x-0.8y=-6
4.8x+2.4y=60

Respuesta :

2043306702 2043306702

20-10-2016

12x-8y=-60 48x+24y=600 3x-2y=-15 2x+y=25 So y=25-2x So 3x-2(25-2x)=-15 3x-50+4x=-15 7x=35 X=5 So y=25-10=15

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