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Matematyka wokoło nas 4.2


Matematyka Wokoło Nas 42 class=

Odpowiedź :

Odpowiedź:

I   [tex]3-2 \dfrac{ 1 }{ 3 } +1 \dfrac{ 2 }{ 3 } = \frac{9}{3} - \frac{7}{3} + \frac{5}{3} = -\frac{7}{3} +\frac{14}{3} =\frac{7}{3}[/tex]

J   [tex]4 \dfrac{ 2 }{ 3 } +5 \dfrac{ 1 }{ 3 } +8 \dfrac{ 2 }{ 3 } = \frac{14}{3} +\frac{16}{3} +\frac{26}{3} =\frac{56}{3} =18\frac{2}{3}[/tex]

N   [tex]2+2 \dfrac{ 2 }{ 5 } +1 \dfrac{ 4 }{ 5 } = 2 + \frac{12}{5} +\frac{9}{5} =2+\frac{21}{5} =2+4\frac{1}{5} =6\frac{1}{5}[/tex]

K [tex]2 \dfrac{ 3 }{ 5 } +0+2 \dfrac{ 4 }{ 5 } = \frac{13}{5} +\frac{14}{5} =\frac{27}{5} =5\frac{2}{5}[/tex]

S  [tex]5 \dfrac{ 1 }{ 2 } -2 \dfrac{ 1 }{ 2 } +3=\frac{11}{2} -\frac{5}{2} +\frac{6}{2} =\frac{6}{2}+\frac{6}{2}=6[/tex]

R  [tex]6 \dfrac{ 4 }{ 8 } +5 \dfrac{ 5 }{ 8 } -5 \dfrac{ 2 }{ 8 } = \frac{52}{8} +\frac{45}{8} -\frac{42}{8} =\frac{97}{8} -\frac{42}{8} =\frac{55}{8} =6\frac{7}{8}[/tex]

Z  [tex]4 \dfrac{ 4 }{ 5 } +5 \dfrac{ 3 }{ 5 } -2 \dfrac{ 2 }{ 5 } = \frac{24}{5} +\frac{28}{5} -\frac{12}{5} =\frac{52}{5} -\frac{12}{5} =\frac{40}{5} =8[/tex]

O  [tex]4 \dfrac{ 5 }{ 8 } -2 \dfrac{ 5 }{ 8 } +4 \dfrac{ 2 }{ 8 }=\frac{37}{8} +\frac{34}{8} -\frac{21}{8} =\frac{71}{8} -\frac{21}{8} =\frac{50}{8} =\frac{25}{4}=6\frac{1}{4}[/tex]

Ó  [tex]5 \dfrac{ 1 }{ 4 } +4 \dfrac{ 1 }{ 4 } +3 \dfrac{ 3 }{ 4 } =\frac{21}{4} +\frac{17}{4} +\frac{15}{4} =\frac{53}{4} =13\frac{1}{4}[/tex]