Question

Oblicz:
a) (-2 + 8) * (-3)=................
b)(-3 - 8) * (7 - 12)=..................
c)4-(-5)
_____ =.......................
-3 pod kreską ułamkową

d) (-13 - 8) : (-7 + 10)=................
e) (-2) * (3 - 7) - (-7 + 2)=......................
f) (13-18)- (17-(-3))
_______________ =
10-15 pod kreską ułamkową

Answer 1

A)
(-2 + 8) * (-3) = 6 * (-3) = - 18


b)
(-3-8) * (7-12) = - 11 * (-5) = 55


c)
4 - (-5) """"""4 + 5 """"""" 9
----------- = ------------ = ------ = - 3
- 3 """""""""""" -3 """""""""- 3


d)
(-13-8) : (-7 + 10) =  - 21 : 3 = - 7


e)
(-2) * (3-7) - (-7 + 2) = -2 * (-4) - (-5) = 8 + 5= 13


f)
(13 - 18) - (17 - (-3))  
-------------------------------- =
10 - 15 


""""" - 5 - (17 +3)
= ------------------------- =
"""""""""  - 5


"""""""  - 5 - 20
= -------------------- =
"""""""" -5


"""""" - 25
= ------------- =
""""" - 5


= 5