zad.1 Oblicz:
a) 1 5/6 - 3 1/3 =
b)-4,5 - 2 1/4 =
c) 3 1/6 - (-5 5/6)=
d) 7 1/3 + (-4 5/6) =
e) -5 4/7 +7=
f) 1,23-9=
g)-6-(-4 5/9 =
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a)
1 i 5/6 - 3 i 1/3 =
= 11/6 - 10/3 =
= 11/6 - 20/6 =
= -9/6 =
= -3/2
=========================================
b)
-4,5 - 2 1/4 =
= -4,5 - 2,25 =
= -6,75
=========================================
c)
3 1/6 - (-5 5/6) =
= 19/6 - (-35/6) =
= 19/6 + 35/6 =
= 54/6 =
= 9
=========================================
d)
7 1/3 + (-4 5/6 ) =
= 22/3 + (-29/6) =
= 22/3 - 29/6 =
= 44/6 - 29/6 =
= 15/6 =
= 2 i 3/6 =
= 2 i 1/3
=========================================
e)
-5 4/7 + 7 =
= - 39/7 + 6 i 7/7 =
= - 39/7 + 49/7 =
= 10/7 =
= 1 i 3/7
=========================================
f)
1,23 - 9 =
= -7,77
=========================================
g)
-6 - (-4 5/9) =
= -6 + 4 i 5/9 =
= - 5 i 9/9 + 4 i 5/9 =
= -54/9 + 41/9 =
= -13/9 =
= - 1 i 4/9