Zad.8 str.40 podręcznik klasa 1 gimnazjum
-5/9+2/3+5/9-5/6-2/3=
-2/7+3/8-1/2+2/7-1/4+1/2=
-1,1+2,2+3,3-5,5+6,6=
-3,7+2,850+4,7-4,85=
1cała 1/4-0,5-3/7-0,25+1cała 1/2
i jeszcze zad.11 str.40 podręcznik klasa 1 gimnazjum
-2:(2-11)=
(-2-4)x(-6):(-3)2do potegi drugiej= (-3 )i potega 2
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-5/9+2/3+5/9-5/6-2/3=-5/6
-2/7+3/8-1/2+2/7-1/4+1/2=3/8-1/4=3/8-2/8=1/8
-1,1+2,2+3,3-5,5+6,6=-1,1+5,5-5,5+6,6=5,5
1 1/4-0,5-3/7-0,25+1 1/2=5/4-1/2-3/7-1/4+3/2=4/4+2/2-3/7=1+1-3/7=2-3/7=
=14/7-3/7=11/7=1 4/7
-3,7+2,850+4,7-4,85=4,7-3,7+2,85-4,85=1-2=-1
-2:(2-11)=-2:(-9)=2/9