Question

Oblicz:
2 1/3 + 5/6 x 3/5 =
7 - 4/5 : 2 1/2 =
1 1/4 x 1 3/5 - (0,6 - 0,55) =
4 1/2 x 2/3 - 1/4 : 4,5 x 2 + 0,4 x 5 =
orazoblicz wynik
( 2/7) do kwadratu
( 1 1/2) do sześcianu

wstaw znak <,=,>
4/5...0,0(8)

Answer 1

2i1/3 + 5/6 *3/5 = 2i1/3 + 1/2 *1/1 = 2i1/3 + 1/2 = 2i2/6 + 3/6= 2i5/6

7 -4/5 : 2i1/2= 7 - 4/5 : 5/2= 7 - 4/5 * 2/5 = 7 - 8/25 = 6i25/25 - 8/25= 6i17/25

1i1/4 * 1i3/5 - (0,6 - 0,55) = 5/4 * 8/5  - 0,05 = 1/1 * 2/1 - 0,05= 2 - 0,05= 1,95

4i1/2 * 2/3 - 1/4  : 4,5 * 2 + 0,4 *5 = 9/2 * 2/3 - 1/4 :45/10 * 2  + 2 =
=3/1 * 1/1 -1/4 * 10/45 * 2 +2 = 3 - 1/2 * 5/45 *2 +2= 3 - 5/90 *2 +2 =
= 3 - 10/90 + 2 = 5 - 10/90 = 4i90/90 - 10/90 = 4i80/90= 4i8/9

2/7^2 = 2/7 * 2/7 = 4/49
(1 i1/2)^3 = 3/2^3 = 3/2 * 3/2 *3/2 = 27/8

4/5 > 0,08                     ( 4/5 = 8/10 = 0,8)