@afkarinkamila
diketahui : Edi = x, Tomi = 2000+x, Susan = 5000+(2000+x) jawab : x+(2000+x)+5000+(2000+x) = 3x+9000 = 3x+3000 ? 3x=3000 3 3 x=1000 jadi, susan = 5000...