Respostas

2014-08-13T23:23:44-03:00
1/2*x+1/3*x+1/3*x+1/3*x=45000
3x+2x+2x+2x=270000
       6
9x=270000
x=270000/9
x=30000

Tirando a prova:
1/2*30000+1/3*30000+1/3*30000+1/3*30000=0
30000/2+30000/3+30000/3+30000/3=0
15000+10000+10000+10000=45000,00

Espero ter ajudado.