Question

1. Rozwiąż.

⅔ + ³/₅ =

⅔ + (-4/15)=

⅔ + 6/10 =

⅔ + (-2/6) =

-3/4 + 3/5=

-3/4 + (-4/15)=

-3/4 + 6/10=

-3/4 + (-2/6)=

8/9 - (-2/3)=

8/9 - 5/4=

8/9 - (-3/2)=

8/9 - 6/5=

-5/6 - (-2/3)=

-5/6 - 5/4=

-5/6 - (-3/2)=

-5/6 - 6/5=

Proszę o pomoc, nie jestem dobra z ułamków :/ Dam naj !

Answer 1

1. Rozwiąż.

⅔ + ³/₅ =10/15 + 9/15 = 19/15 = 1   4/15

⅔ + (-4/15)= 10/15 - 4/15 = 6/15=2/5

⅔ + 6/10 =20/30  + 18/ 30 = 38/30 = 1  8/30 = 1  4/15

⅔ + (-2/6) = 4/6 - 2 / 6  =2/6 = 1/3

 

-3/4 + 3/5= -15/20 +12/20 =-3/20 

-3/4 + (-4/15)= - 45/60 - 16/60 =-61/60 = -1  1/60

-3/4 + 6/10= -15/20 +12/20 = -3/20

-3/4 + (-2/6)= -9/12 - 4/12 = -13/12 = - 1  1/12 

 

8/9 - (-2/3)= 8/9 + 6/9 = 14/9 = 1  5/9 

8/9 - 5/4= 32/36 - 45/36 = -13/36  

8/9 - (-3/2)=16/18 + 27/18 = 43/18 = 2   7/18

8/9 - 6/5= =40/45 - 54/45 = -14/45

 

-5/6 - (-2/3)= -5/6 + 4/6 = -1/6

-5/6 - 5/4= -20/24 - 30/24 = -50/24 = -25/12  = -2  1/12

-5/6 - (-3/2)=-5/6 +9/6 = 4/6= 2/3

-5/6 - 6/5= -25/30 - 36/30 = -61/30 = -2  1/30

Answer 2

Witam,

 

⅔ + ³/₅ = 10/15 + 9/15 = 19/15 = 1 4/15

⅔ + (-4/15)= 10/15 - 4/15 = 6/15 = 2/5

⅔ + 6/10 = 2/3 + 3/5 = 10/15 + 9/15 = 19/15 = 1 4/15

⅔ + (-2/6) = 2/3 - 2/6 = 2/3 - 1/3 = 1/3

 

-3/4 + 3/5= - 15/20 + 12/20 = - 3/20

-3/4 + (-4/15)= - 45/60 - 16/60 = - 61/60 = - 1 1/60

-3/4 + 6/10= - 3/4 + 3/5 = - 15/20 + 12/20 = - 3/20

-3/4 + (-2/6)= - 3/4 - 2/6 = - 3/4 - 1/3 = - 9/12 - 4/12 = - 13/12 = - 1 1/12

 

8/9 - (-2/3)= 8/9 + 2/3 = 8/9 + 6/9 = 14/9 = 1 5/9

8/9 - 5/4= 32/36 - 45/36 = - 13/36

8/9 - (-3/2)= 8/9 + 3/2 = 16/18 + 27/18 = 43/18 = 2 7/18

8/9 - 6/5= 40/45 - 54/45 = - 14/45

 

-5/6 - (-2/3)= - 5/6 + 2/3 = - 5/6 + 4/6 = - 1/6

-5/6 - 5/4= - 10/12 - 15/12 = - 25/12 = - 2 1/12

-5/6 - (-3/2)= - 5/6 + 3/2 = - 5/6 + 9/6 = 9/6 - 5/6 = 4/6 = 2/3

-5/6 - 6/5=- 25/30 - 36/30 = - 61/30 = - 2 1/30

 

proszę bardzo, pozdrawiam :)