Treść zadania

rozala1979

sprowadz ulamki do wspolnego mianownika.
6/7+4/8+2/3=
5/9+2/3+7/18=
5/6+3/4+1/2=
3/8+9/10+4/5=
2/3+3/5+4/15=3/4+5/6=3/8=

Zadanie jest zamknięte. Autor zadania wybrał już najlepsze rozwiązanie lub straciło ono ważność.

Najlepsze rozwiązanie

  • 1 0

    6/7+4/8+2/3=

    = 144/168 + 84/168 + 112/168 =

    = 340/168 =

    = 2 i 4/168 =

    = 2 i 1/42



    5/9+2/3+7/18=

    = 10/18 + 12/18 + 7/18 =

    = 29/18 =

    = 1 i 11/18



    5/6+3/4+1/2=

    = 10/12 + 9/12 + 6/12 =

    = 25/12 =

    = 2 i 1/12



    3/8+9/10+4/5=

    = 15/40 + 36/40 + 32/40 =

    = 83/40 =

    = 2 i 3/40



    2/3+3/5+4/15=

    = 10/15 + 9/15 + 4/15 =

    = 23/15=

    = 1 i 8/15



    3/4+5/6+3/8=

    = 18/24 + 20/24 + 9/24=

    = 47/24=

    = 1 i 23/24

Rozwiązania

  • userphoto

    1) 6/7+4/8+2/3= 6/7+1/2+2/3=36/42+21/42+28/42
    2) 5/9+2/3+7/18=20/36+24/36+14/36
    3) 5/6+3/4+1/2=10/12+9/12+6/12
    4) 3/8+9/10+4/5=15/40+36/40+32/40
    5) 2/3+3/5+4/15=3/4+5/6=3/8
    10/15+9/15+4/15=18/24+20/24=9/24

  • userphoto

    6/7 + 4/8 + 2/3 = 6/7 + 1/2 + 2/3 = 6/7 + 3/6 + 4/6 = 6/7 + 7/8 = 36/42 + 49/42 = 85/42 = 2 1/42

    5/9 + 2/3 + 7/18 = 10/18 + 12/18 + 7/18 = 28/18 =1 11/18

    5/6 + 3/4+ 1/2 = 20/24 + 18/24 + 12/24= 50/24= 2 1/12

    3/8+9/10+4/5=3/8+9/10+8/10=3/8+17/10=30/80+136/80=166/80=2 6/80 = 2 3/40

    2/3+3/5+4/15=10/15+9/15+4/15=23/15= 1 8/15

    3/4+5/6+3/8= 18/24+20/24+9/24=47/24=1 23/24

  • kochanamisia162

    6/7 + 4/8 + 2/3 = 6/7 + 1/2 + 2/3 = 6/7 + 3/6 + 4/6 = 6/7 + 7/8 = 36/42 + 49/42 = 85/42 = 2 1/42

    5/9 + 2/3 + 7/18 = 10/18 + 12/18 + 7/18 = 28/18 =1 11/18

    5/6 + 3/4+ 1/2 = 20/24 + 18/24 + 12/24= 50/24= 2 1/12

    3/8+9/10+4/5=3/8+9/10+8/10=3/8+17/10=30/80+136/80=166/80=2 6/80 = 2 3/40

    2/3+3/5+4/15=10/15+9/15+4/15=23/15= 1 8/15

    3/4+5/6+3/8= 18/24+20/24+9/24=47/24=1 23/24

    to jest dobrze rozwiazuję :)

  • kamcia836

    1) 6/7+4/8+2/3= 6/7+1/2+2/3=36/42+21/42+28/42= 85/42=2 1/42
    2) 5/9+2/3+7/18=10/18+12/18+7/18=29/18=1 11/18
    3) 5/6+3/4+1/2= 10/12+9/12+6/12=25/12=2 1/12
    4) 3/8+9/10+4/5= 15/40+36/40+32/40=83/40=2 3/40
    5)2/3+3/5+4/15= 10/15+9/15+4/15=23/15=1 8/15
    6)3/4+5/6=3/8=18/24+20/24+9/24=47/24=1 23/24

    dobrzee jest ::))::))

  • userphoto

    \frac {6}{7}+ \frac {4}{8}+ \frac {2}{3}= \frac {6}{7}+ \frac {1}{2}+ \frac {2}{3}=\frac {36}{42}+ \frac {21}{42}+ \frac {28}{42}= \frac {36+21+28}{42}= \frac {85}{42}=2 \frac {1}{42}


    \frac {5}{9}+ \frac {2}{3}+ \frac {7}{18}= \frac {10}{18}+ \frac {12}{18}+ \frac {7}{18}= \frac {10+12+7}{18}= \frac {29}{18}=1 \frac {11}{18}


    \frac {5}{6}+ \frac {3}{4}+ \frac {1}{2}= \frac {10}{12}+ \frac {9}{12}+ \frac {6}{12}= \frac {10+9+6}{12}= \frac {25}{12}=1 \frac {1}{12}

    \frac {3}{8}+ \frac {9}{10}+ \frac {4}{5}= \frac {15}{40}+ \frac {36}{40}+ \frac {32}{40}= \frac {15+36+32}{40}= \frac {83}{40}=2 \frac {3}{40}


    \frac {2}{3}+ \frac {3}{5}+ \frac {4}{15}= \frac {10}{15}+ \frac {9}{15}+ \frac {4}{15}= \frac {10+9+4}{15}= \frac {23}{15}=1 \frac {8}{15}

    \frac {3}{4}+ \frac {5}{6}+ \frac {3}{8}= \frac {18}{24}+ \frac {20}{24}+ \frac {9}{24}= \frac {18+20+9}{24}= \frac {47}{24}=1 \frac {23}{24}

  • userphoto

    6/7 + 4/8 + 2/3 = 6/7 + 1/2 + 2/3 = 62) 5/9+2/3+7/18=20/36+24/36+14/36/7 + 3/6 + 4/6 = 6/7 + 7/8 = 36/42 + 49/42 = 85/42 = 2 1/425/6 + 3/4+ 4) 3/8+9/10+4/5=15/40+36/40+32/401/2 = 20/24 + 18/24 + 12/24= 50/24= 2 1/125) 2/3+3/5+4/15=3/4+5/6=3/8

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