Minta bantuannya dong jawab nomor 19 pakai cara caranya

pakai perbandingan

4/ (4+ x) = 6 / (6+3)
4 / (4+x) = 6 / 9
6 dikali (4+x) = 4 kali 9
24 +6x = 36
   6x = 36-24
    6x  = 12
     x = 12/6
   x= 2


semoga bermanfaat