Matematika B - 2011. ljeto, 10.

$\frac{P}{r\pi +B}\backslash frac\{P\}\{r\; \backslash pi+B\}$

$\frac{P}{r\pi }-B\backslash frac\{P\}\{r\; \backslash pi\}-B$

$\frac{P}{r\pi -B}\backslash frac\{P\}\{r\; \backslash pi-B\}$

$\frac{P-B}{r\pi }\backslash frac\{P-B\}\{r\; \backslash pi\}$