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-2 : (-4)=-2 *(- 1/4) =
2/4 = 1/2
____________________
b) 6-(-7) x (-2) : -4=
6+7 * 1/2=
6+3 1/2=
9 1/2
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c) (-2- 4) x (-6) : (-3) do potęgi 2=
(-6) * (-6) : 9=
36:9 =4
_________________________
d) (-3) x (-2 -10) - 5 : 7-9=
(-3)*(-12)-5/7 -9 =
3/12 - 5/7 - 9=
1/4 - 5/7 -9=
7/28 - 20/28 -9=
-13/28 - 9=
- 9 13/28
----------------------------------------------------------
e) (-2) do potęgi 3 + 45 :( - 3 do potęgi 2 )=
-8 +45:9=
-8:5=
- 8/5 = - 1 3/5
_______________________________
f) 15 - ( - 2) x 4 : - 11 + 4 + 5-2:2-3=
15-(-8):(-11)+6-2=
15+8 :(-11)+4=
19 - 8/11= 18 3/11
--------------------------
g) (-2) x 1-4 : 4=
-2 -1= -3
-----------------------
h) 12-20 : 2 x 3=
12-10*3=
12-30=
-18
---------------------------------
i) -8+4 : 3 x 6 : -1+3=
-8 +4/3 *6 :(-1) +3=
-8 +8 :(-1)+3=
-8-8+3=
-16+3= - 13