perhatikan gambar disamping! tentukan nilai x adalah

[tex] \frac{12}{12 + x} = \frac{10}{16} \\ 192 = 120 + 10x \\ 10x = 72 \\ x = 7.2 \: cm [/tex]

10/16 = 12/(12+x)
10(12+x) = 12 (16)
12+x = 192/10
x = 19,2 -12 = 7,2