Question

3,75 :(2 i 5/6 +1 i 1/3)=
12:3/5-11/3×0,3=
(1/2)²+5 i 1/5×1,5=
20-12 i 2/2 : 5/6=

Answer 1

3,75 : (2 i 5/6 + 1 i 1/3)=

= 3 i 75/100 : (2 i 5/6 + 1 i 2/6)=

= 3 i 3/4 : 3 i 7/6=

= 15/4 : 25/6=

= 15/4 * 6/25=

= 3/2 * 3/5=

= 9/10




12 : 3/5 - 11/3 * 0,3=

= 12 * 5/3 - 11/3 * 3/10=

= 4 * 5/1 - 11/1 * 1/10=

= 20/1 - 11/10=

= 20 - 1 i 1/10=

= 19 i 10/10 - 1 i 1/10=

= 18 i 9/10

jeśli źle odczytałam zapis i nie miało być 11/2 tylko 1 i 1/3 -> to rozwiązanie jest takie 

12 : 3/5 - 1 i 1/3 * 0,3=

= 12 * 5/3 - 4/3 * 3/10 =

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

= 20/1 - 2/5=

= 20 - 2/5=

= 19 i 5/5 - 2/5=

= 19 i 3/5



(1/2)^2 + 5 i 1/5 * 1,5=

= 1/4 + 26/5 * 1 i 5/10=

= 1/4 + 26/5 * 15/10 =

= 1/4 + 13/1 * 3/5=

= 1/4 + 39/5=

= 1/4 + 7 i 4/5=

= 5/20 + 7 i 16/20=

= 7 i 21/20=

= 8 i 1/20

lub na ułamkach dziesiętnych

(1/2) + 5 i 1/5 * 1,5=

= 1/4 + 5 i 2/10 * 1,5=

= 25/100 + 5,2 * 1,5=

=0,25 + 7,8=

= 8,05



20 - 12 i 2/2 : 5/6=

= 20 - 26/2 * 6/5=

= 20 - 26/1 * 3/5=

= 20 - 78/5=

= 20 - 15 i 3/5=

= 19 i 5/5 - 15 i 3/5=

= 4 i 2/5