Question

Oblicz
-6 1/3+4 1/2 * 10
(5 5/6 + 4 1/2 * 1 2/3) : 4 4/15 - 8 3/4
2 1/2 * (4/5:4+3/10)-1 3/20
0,72:(-0,6)
-0,78*0,9

Answer 1

-6 1/3 + 4 1/2 * 10 = -6 1/3 + 9/2 * 10 = -6 1/3 + 90/2= -6 1/3 + 45 = 
 = -6 1/3 + 44 3/3 = 38 2/3

(5 5/6 + 4 1/2 * 1 2/3) : 4 4 /15 - 8 3/4 =
(5 5/6 + 9/2 * 5/3) : 64/15 - 8 3/4 =
(5 5/6  + 3/2 * 5/1) : 64/15 - 8 3/4 =
(5 5/6 + 15/2) : 64/15 - 8 3/4 =
(35/6 + 45/6) : 64/15 - 8 3/4 =
80/6 * 15/64 - 8 3/4 =
10/2 * 5/8 - 8 3/4 =
50/16 - 8 3/4 =
3 2/16 - 8 12/16 = - 5 10/16 = -5 5/8

2 1/2 * (4/5 : 4 + 3/10) - 1 3/20 =
5/2 * (4/5 * 1/4 +3/10) - 1 3/20=
5/2 * ( 4/20 + 6/20) - 1 3/20 =
5/2 * 10/20 - 1 3/20 =
1/1 * 5/4 - 1 3/20 =
1 1/4 - 1 3/20 =
1 5/20 - 1 3/20 = 2/20 = 1/10 

0,72 : (-0,6) = 7,2 : (-6) = -1,2

-0,78 * 0,9 = - 0,702