Tolong itu yg NO. 12&13 Sama. caranya,, di kumpulkan besok soalnya

[tex]12) \: \: 3.2 - 37.5\% \times 3.2 - \frac{4}{5} + 2.2 = 3.2 - 1.2 - 0.8 + 2.2 = 3.4liter[/tex]
[tex]13) \: \: \frac{31}{124} = \frac{1}{4} = 0.25 \\ \frac{27}{36} = \frac{3}{4} = 0.75[/tex]