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del enunciado:
x=(3/5)x+(1/3)x+40 000
resolviendo hallamos x
x-(3/5)x-(1/3)x=40 000
(15/15)x-(9/15)x-(5/15)x=40 000
(15x-9x-5x)/15= 4 0 000
x/15=40 000
x=15*40 000
x=600 000
rpta 600 000