Question

Oblicz. Pamiętaj o kolejności wykonywania działań

A) (2 i 2/3 - 4/5) x 1 i 3/7=

B) 4 i 1/2 x 1 i 1/3 - 2 i 2/5 x 5/7=
_______________ ___________

C) 1 i 2/3 - 5/6 + 2 i 1/10 : 1 i 6/15

D) (5/8 + 1/2) : 1 i 1/2 -1/3=

BŁAGAM ZRÓBCIE MI TO MAM TO NA JUTRO!!

Answer 1

A)
(2 2/3 - 4/5) * 1 3/7 =
(2 10/15 - 12/15) * 10/7 =
(40/15 - 12/15 * 10/7 =
28/15 * 10/7 = 
4/3 * 2/1 = 8/3 = 2 2/3 
B)
4 1/2 * 1 1/3 - 2 2/5 * 5/7 =
9/2 * 4/3 - 12/5 * 5/7 =
36/6 - 12/1 * 1/7 =
6 - 12/7 = 6 - 1 5/7 =
5 7/7 - 1 5/7 = 4 2/7
C)
1 2/3 - 5/6 + 2 1/10 : 1 6/15 =
1 2/3 - 5/6 + 21/10 : 21/15 =
1 2/3 - 5/6 + 21/10 * 15/21 =
1 2/3 - 5/6 + 1/2 * 3/1 =
1 2/3 - 5/6 + 3/2 =
1 2/3 - 5/6 + 1 1/2 =
1 4/6 - 5/6 + 1 3/6 = 
2 7/6 - 5/6 = 2 2/6 = 2 1/3
D)
(5/8 + 1/2) : 1 1/2 - 1/3 =
(5/8 + 4/8) : 3/2 - 1/3 =
9/8 * 2/3 - 1/3 =
18/24 - 8/24 = 10/24 = 5/12