Respostas

2013-10-01T17:46:38-03:00
Fog =5k-8(10-3x)=5k-80+24x           
gof= 10-3(5k-8x)=10-15k+24x    
24x=-5k+80   -5k+80=15k-10  20k=90 k=4,5
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