Oblicz : ( 1,5 + 2 1/3) * (4 1/5 - 2,7) =
=(1\frac{1}{2}+2\frac{1}{3}) * (4,2-2,7)=
=1\frac{3}{6}+2\frac{2}{6}) * 1,5=
=3\frac{5}{6} * 1\frac{1}{2}=
=\frac{23}{6} * \frac{3}{2}=\frac{23}{4}=5\frac{3}{4}