[tex]\frac{3}{4}\cdot(-3\frac{1}{5}) = \frac{3}{4}\cdot(-\frac{3\cdot5+1}{5}) =\frac{3}{4}\cdot(-\frac{16}{5}) = 3\cdot(-\frac{4}{5}) = -\frac{12}{5} = -2\frac{2}{5}=-2,4\\\\\\(-7\frac{4}{5}):(-2\frac{2}{5}) = (-\frac{39}{5}):(-\frac{12}{5}) = (-\frac{39}{5})\cdot(-\frac{5}{12}) = \frac{39}{12} = 3\frac{3}{12} = 3\frac{1}{4}=3,25\\\\\\(-1,4)\cdot(-5,06) =(-\frac{14}{10})\cdot(-\frac{506}{100}) = (-\frac{7}{5})\cdot(-\frac{253}{50}) =\frac{1771}{250} =7\frac{21}{250}=7,084[/tex]
[tex]0,056 : 0,8 = 56:800 = 0,07[/tex]
