Odpowiedź:
Szczegółowe wyjaśnienie:
B)
[tex](-0,30) * (-2\frac{1}{2}) = (-\frac{30}{10}) * (-\frac{5}{2} ) = \frac{90}{20} = \frac{9}{2} =4\frac{1}{2}[/tex]
C)
[tex]-2,125 + 1 \frac{1}{8} = -2\frac{125}{1000} + \frac{9}{8} = -\frac{2125}{1000} + \frac{1125}{1000} = -\frac{1000}{1000} = -1[/tex]
D)
[tex]-4,78 - 3\frac{1}{5} = -4,78 - 3\frac{2}{10} = -4,78 - 3,2 = 7,98[/tex]
albo
[tex]-4,78 - 3\frac{1}{5} = -4\frac{78}{100} - 3\frac{2}{10} = - \frac{478}{100} - \frac{32}{10} = - \frac{478}{100} - \frac{320}{100} = - \frac{798}{100} = -7\frac{98}{100}[/tex]
