oblicz:
a) (-7)+6+(-2)+(-5)+16=.........
b) (-20)+(-60)+90+(-10)+30=.......
c) 8,5+(-2,4)+(-1,1)+4,2+(-7,6)=........
d) (-1 1/2)+(-2 2/3)+1 4/9+6 5/9+(-3 11/18)=.........
e) (-4,5)+(2 2/5)+7 1/2+(-1,7)+6 4/5=..........
kreske ułamkową zastąpiłem ukośnikami.
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a) 8
b) 30
c) 1,6
d) 2/9
e) 5,7