Question

Proszę o pomo..

Bardzo proszę z rozwiązaniami

2 4/7 - 5 2/3 + 2/5 - 2 4/7 - 1/3 - 2/5= ?
- 1 2/3 + 5/8 - 6 2/3 - 1/8 - 1/2 = ?
- 5 3/5 - 2 3/4 + 3 4/7 + 3/5 + 1 3/4 - 2 1/7= ?

Answer 1

2 4/7-5 2/3+2/5-2 4/7-1/3-2/5=-5 2/3-1/3=6 

-1 2/3+5/8-6 2/3-1/8-1/2=-1 16/24+15/24-6 16/24-3/24-12/24=-1 1/24-6 31/24=7 32/24=8 8/24=8 1/3

-5 3/5-2 3/4+3 4/7+3/5+1 3/4-2 1/7=-5 3/5+3/5-2 3/4+1 3/4+3 4/7-2 1/7=-5-1+1 3/7=-5 3/7

Answer 2

2 4/7 - 5 2/3 + 2/5- 2 4/7-1/3=2 4/7-2 4/7 - 5 2/3 - 1/3+ 2/5= 5 1/3+ 2/5 = 16/3 + 2/5 =80/15 + 6/15 = 86/15 = 5 1/3

 

 

-1 ⅔ +⅝ - 6⅔ - ⅛ - ½ = 5/3 + 4/8- 20/3 - ½ = -15/3 = -5

 

 

-5 ⅗ - 2¾ + 3 4/7 + ⅗ +1 ¾ - 2 1/7 = -28/5 - 11/4 + 25/7 + 3/5 +7/4 - 15/7 =

-25/5 - 3/4 + 5/7 = -5 - 3/4 + 5/7 = -5 3/4 + 5/7 = -23/4 + 5/7 = -161/28 + 20/28 = -141/28= 5 1/28