Question

PLISSS OBLICZCIE MI TE ZADANIA !!!! POMOCY!
4/8:1/2-1/2:1 1/4=
(8/9-5/6):2/9=
2 2/5*6 2/3-9 1/7=
9 1/2-2 3/5*1/2=

Answer 1

4/8:1/2-1/2:1  i 1/4=

= 4/8 * 2/1 - 1/2 : 5/4=

= 4/4 * 1/1 - 1/2 * 4/5=

= 4/4 - 1/1 * 2/5=

= 1 - 2/5=

= 5/5 - 2/5=

= 3/5




(8/9-5/6):2/9=

= (16/18 - 15/18) * 9/2=

= 1/18 * 9/2=

= 1/2 * 1/2=

= 1/4





2 i 2/5*6 i 2/3-9 i 1/7=

= 12/5 * 20/3 - 9 i 1/7=

= 4/1 * 4/1 - 9 i 1/7=

= 16/1 - 9 i 1/7=

= 16 - 9 i 1/7=

= 15 i 7/7 - 9 i 1/7=

= 6 i 6/7





9  i 1/2-2 i 3/5*1/2=

= 9 i 1/2 - 13/5 * 1/2 =

= 9 i 1/2 - 13/10 =

= 9 i 5/10 - 1 i 3/10=

= 8 i 4/10 =

= 8 i 2/5