1.Oblicz
a) 2 do -3=
b)6 do -2=
c)2/7 do -1=
d) 0,25 do -1 +(2/3) do -1 =
e)(2/5) do -2+(1 1/3) do -1=
a)(2/3) do -2 - ( 4/3)d -1=
b)[(1/5)do -3 - (1/3)do -4 ] do -1 =
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a)2do -3=-8
b) 6do -2 = 36
c)2/7 do -1= -2/7
d) 0,25do -1+(2/3)do -1 = -0,25+(-2/3)=(-3/4)+(--9/12)+(-1)=1cała 9/12
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