Question

oblicz ! 1 i dwie piąte - 3 i 7/8 -0,125 1 i 5/8 - (-2 i 2/3 + 0,25) 1/2 -1/3 - (1/4-1/5) pliss!

Answer 1

* 1 2/5 - 3 7/8 - 125/1000 = 12/5 - 31/8 - 1/8 = 12/5 - 32/8 = 12/5 - 4 = 12/5 - 20/5 = -8/5

 

* 1 5/8 - (-2 2/3 + 0,25) = 13/8 - ( - 8/3 + 25/100 [1/4]) = 13/8 - (- 32/12 + 3/12) = 13/8 - (-29/12) = 13/8 + 29/12 = 39/24 + 58/24 = 97/24 = 4 1/24

 

* 1/2 - 1/3 - (1/4 - 1/5) = 3/6 - 2/6 - (5/20-4/20) = 1/6 - 1/20 = 20/120 - 60/120 =

- 40/120 = -4/12 = -1/3 

Answer 2

1 ²/₅ - 3⁷/₈ -0,125 = 7/5  -31/8 - 125/1000 = 1400/1000 -  3875/1000 - 125/1000 = 

 - 2600/1000 = - 26/10 = - 13/5 = - 2³/₅ 

  

 

1⁵/₈ -(-2⅔ +0,25) = 13/8 -(-8/3 + 1/4)= 13/8+8/3 -1/4 =39/24 +64/24 -6/24 =97/24 =4 i 1/24

 

 

1/2 -1/3 -(1/4-1/5) = 1/2 -1/3 -1/4 +1/5 = 30/60 -  20/60 - 15/60 + 12/60 = 7/60