Question

zad. 1

a)4 i 2/3 - 3 i 1/3 * 2 i 1/2

b) 3 i 3/4 * 1 i 1/5 + (-1,5) : 2,4 - 1/4

zad. 2

a) 3/7 - (2,5 * 7/25 - 0,2)

b) 2 + (2+(2+(2+2)) -2) -2

c) 0,12 * 3/4 - (3/5 - 2,1 * 5/7)

d) ((3,2 + 7/8) : 2,5 - 0,62) * (-100/3)

e) 4 * (0,6 - 3/5 : (-3))

f) ((2 i 1/3 - 1 i 3/4) + 5/12) : ( -0,02 - 0,08)

g) (-1/9 + 1 i 1/6) : ( 1/6 - 1 i 1/3)

h) 1,44 : 2 i 2/5 - (0,75 - 1 i 1/3) * (-4/5)

NA DZISIAJ! BŁAGAM! MOŻECIE NAWET POŁOWĘ Z TEGO!

Answer 1

zad. 1

a)4 i 2/3 - 3 i 1/3 * 2 i 1/2 = 14/3 - (10/3*1)= 14/3 - 10/3 = 4/3 = 1 i 1/3 

b) 3 i 3/4 * 1 i 1/5 + (-1,5) : 2,4 - 1/4 = (15/4* 6/5) + (3/2 : 15/5) -1/4= 9/2 + (3/2 * 5/15) -1/4=

= 9/2+ 1/2 - 1/4= 10/2 -1/4 = 5 -1/4= 4 i 3/4

zad. 2

a) 3/7 - (2,5 * 7/25 - 0,2)= 3/7 - (5/2*7/25 - 1/5)= 3/7 - (7/10- 2/10) = 3/7 - 5/10= 30/70 - 35/70=

=-5/70= -1/14

 

b) 2 + (2+(2+(2+2)) -2) -2 = 2+ (2+(2+4)-2)-2= 2+(2+6-2)-2= 2+6-2= 6

 

c) 0,12 * 3/4 - (3/5 - 2,1 * 5/7)= 3/25*3/4 - (3/5 - 21/10*5/7)= 9/100 - (3/5- 3/2) = 9/100 - (6/10 - 15/10) = 9/100 - (-9/10) = 9/100 + 90/100 = 99/100 = 0,99

 

d) ((3,2 + 7/8) : 2,5 - 0,62) * (-100/3) = ((16/5 +7/8): 5/2 - 31/50) * (-100/3)= (128/40+ 35/40) :5/2 - 31/50) * (-100/3)= (163/40 :5/3 -31/50) *(-100/3)=  (489/200 - 124/200) * (-100/3)= 365/200 * (-100/3)= -365/6= 60 5/6

 

e) 4 * (0,6 - 3/5 : (-3)) = 4*(3/5 - 3/5 * -1/3)= 4*(3/5 - (-3/25))= 4*(9/25+3/25) =4*(12/25)=36/25= 1 i 11/25

 

f) ((2 i 1/3 - 1 i 3/4) + 5/12) : ( -0,02 - 0,08) = ((7/3 - 7/4) + 5/12) : (-2/100-8/100)= ((28/12-21/12) +5/12) : (-10/100) = (7/12+5/12) : (-1/10)= 12/12 : (-1/10) = 1 * (-10)= -10

 

g) (-1/9 + 1 i 1/6) : ( 1/6 - 1 i 1/3) = (-1/9+7/6) : (1/6- 4/3)= (-2/18+ 21/18) : (2/12-16/12)=

= 19/18 : (-14/12) = 19/18 * (-12/14)= 19/21

    

h) 1,44 : 2 i 2/5 - (0,75 - 1 i 1/3) * (-4/5)= 36/25 : 12/5 - (3/4 - 4/3)* (-4/5)= 36/25*5/12 - (9/12-16/12) *(-4/5) = 3/5 - (-7/12)*(-4/5)= 3/5 - (-7/15)= 9/15 + 7/15 = 16/15 = 1 i 1/15

 

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