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56-42=14
56+42=98
-56-(-42)=(-14)
56-(-42)=98
-56-42=(-98)
-56+42=(-14)
Zadanie 6
-13+(-7)=(-20)
16-36=(-20)
23+(-22)=1
-40+15=(-25)
-80-20=(-100)
-13-(-12)=(-1)
Zadanie 7
a)
-3*2=6
5*(-10)=(-50)
b)
-1,5:3=(-0,5)
(-1,8):(-0,2)=9
c)
-0,5:7=0,0714285714285714
0*(-0,25)=0
Zadanie 8
-9+12=3-15=-12+(-6)=-18