Question

Tolong nomber 1 dan 2

buat besok

Answer 1

1. ac/ae=bc/ed
   (ae+ce)/ae=bc/ed
   (6+ce)/6=12/4
   4(6+ce)=12*6
   24+4ce=72
   ce=72-24/4
   ce=12
2. eb/ce=ab/cd
    12/ce=9/6
   9ce=72
ce=72/9
ce=8