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b)9,2-3 3/5=9,2-3,6=5,6
c) 1 1/8*0,48 =9/8*48/10 =(9*48)/(8*10)=9*6/10=54/10=5,4
d)0,9:5/9=9/10:5/9=9/10*9/5=81/50
Zad 2.
(7 1/2 +2,25):4/7= (7,5+2,25):4/7=9,75*7/4=9 3/4*7/4=43/4*7/4=301/16=18i13/16
36,03-6,03:0,9=36,03 -6,7=29,33
zad 3
30 liczby 9
30/100*9=270/100=2,7
Zad4
200-5%*200=200-10=190zł
zad5
(-2)+(-8)*3+6= -2-24+6=-26+6=-20
[1 1/2-(-2)]*(-2/7)=(1 1/2 +2)*(-2/7)=3 1/2 *(-2/7)=7/2*(-2/7)=-1
b) 92/10 - 36/10 = 60
c)5,4
d) 9/10 : 5/9 = 9/10 * 9/5 = 81/50
2. a) 15 / 2 + 9/4 = 30/4 + 9/4 = 39/4 = 9 3/4
b)36,03 - 6,03 : 0,9 = 36,03 - 6,7 = 29,33
3. 30 % liczby 9 to 6,3
4. 200-5% czyli 200-0,05=199,95
5. a) (-2) + (-8) * 3 + 6 = 24
b) [1 1/2 - ( -2) ] * ( -2/7 ) = - 12/7 = 1 5/7
/ - kreska ułamkowa
jeżeli nie wiesz jak cos zrobić to napisz wiadomośc ; )))