[tex] - \frac{3}{4} + ( - 8 \frac{5}{8} ) + ( - 6 \frac{5}{6} ) + ( - 1 \frac{3}{8} ) = \\ \\ - \frac{3}{4} + ( - \frac{69}{8} ) + ( - \frac{41}{6} ) + ( - \frac{11}{8} ) = \\ \\ - \frac{3}{4} + ( - \frac{41}{6} ) + ( - \frac{80}{8} ) = \\ \\ - \frac{18 + 164 + 240}{24} = - \frac{422}{24} = \\ \\ - \frac{211}{12} = - 17 \frac{7}{12} [/tex]
[tex]b) \: - 14 \frac{1}{2} + ( - 7 \frac{3}{5} ) + 8 \frac{1}{5} + ( - 6.3) = \\ \\ - 14.5 + ( - 7.6) + 8.2 + ( - 6.3) = \\ \\ - 22.1 + 1 .9 = - 20.2[/tex]
[tex] \\ c) \: 20 + ( - 16.3) + 4 \frac{1}{3} + ( - 18 \frac{2}{3} ) = \\ \\ 3.7 + ( - 14 \frac{1}{3} ) = \frac{37}{10} - \frac{43}{3} = \\ \\ \frac{111 - 430}{30} = - \frac{319}{30} = - 10 \frac{19}{30} [/tex]
[tex] \\ d) \: - 0.6 + 2 \frac{3}{8} + ( - 7 \frac{5}{8} ) + - (\frac{1}{2} ) + 0 = \\ \\ - 0.6 + 2.375 - 7.625 - 0.5 + 0 = \\ \\ - 8.725 + 2.375 = - 6.35[/tex]
Zadanie 6
[tex]a) \: - 6.4 + ( - 7 \frac{4}{5} ) = - 6.4 + ( - 7.8) = - 14.8[/tex]
[tex]b) \: - 8.9 + 9.8 = 0.9[/tex]
[tex]c) \: - 6 \frac{4}{5} + 6.8 = - 6.8 + 6.8 = 0[/tex]
[tex]d) \: - 4 \frac{5}{6} - ( - 4 \frac{2}{3} ) = - \frac{29}{6} + \frac{14}{3} = \\ \frac{ - 29 +28 }{6} = - \frac{1}{6} [/tex]
Suma dodatnia : B C
Suma najmniejsza : A
Suma ujemną mniejsza od -1 : A
Suma ani dodatnia ani ujemną C
