Question

Daje naj!!
pilne!!!
....

Answer 1

1.(8 3/5-1 2/3)-(1 2/8:1/4)=
(8 9/15- 1 10/15)-(10/8 * 4/1)=
(7 24/15-1 10/15)-10/2=
=6 12/15-5=1 12/15
2. a= (-1 1/2)do pot.2 : 8/9-(2,5-1 1.3)x 1 1/5=
(-16/9):8/9-(2 1/2- 1 1/3)x 1 1/5=
= (-16/9):8/9-(2 3/6-1 2/6)x 6/5=
(-16/9):8/9-1 1/6 x 6/5= (-16/9):8/9-7/6x6/5=
=(-16/9)x9/8-7/6x6/5=(-2)-7/5= 2+ 7/5= 2 7/5= 3 2/5= 17/5
liczb odwrotna to 5/17.
Liczę, że pomogłam.