a.wynacz e ze wzoru :P=e*f 2 b.wyznacz x ze wzoru : K=b(x+y+z) 4

a [latex]P=frac{ef}{2} /cdot 2[/latex] [latex]ef=2P /:f[/latex] [latex]e=frac{2P}{f}[/latex] b [latex]K= frac{b(x+y+z)}{4} /cdot 4[/latex] [latex]b(x+y+z)=4K /:b[/latex] [latex]x+y+z= frac{4K}{b}[/latex] [latex]x=frac{4K}{b}-y-z[/latex]