Jawabanmu

2014-09-07T00:32:07+07:00
Umur Ayah = a
Umurnya = b

a = (2/3)b + c

a = 6 + (1/2)b - 7
= (1/2)b - 1

(1/2)b - 1 = (2/3)b +c
c = (1/2)b-1-(2/3)b
= - (1/6)b - 1
Hmm... Cuma bisa sampe situ gw...
Semoga membantu ya =)

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2014-09-07T07:39:12+07:00