Oblicz:
a)2 1/4 + ( 7 1/2 - 3 4/5 ) =
b) ( 6 - 2 1/3) + ( 8 1/2 - 5 3/4)=
c) 10 1/2 - ( 4 1/3 + 2 1/5 + 1 3/10)=
d ) ( 8 3/4 + 5 1/2) - ( 9 1/5 - 6 7/8)=
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a) 2 1/4 +(7 1/2 - 3 4/5)= 5 19/20
b) (6 - 2 1/3) + (8 1/2 - 5 3/4)= 6 5/12
c) 10 1/2 -(4 1/3 +2 1/5 +1 3/10=2 1/6
d) (8 3/4 +5 1/2) - (9 1/5 - 6 7/8)=11 37/40