oblicz (-7)+2= 9+(-9)= (-20)+25= 51+(-10)= (-75)+(-20)= (-14)+15= 30+(-20)= (-12)+33= 465+(-23)+ (-54)+(-26)+ (-36)+27=
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(-7)+2=(-5) 9+(-9)=0 (-20)+25=5 51+(-10)=41 (-75)+(-20)=(-95) (-14)+15= 1 30+(-20)= 10 (-12)+33=21 465+(-23)+ (-54)+(-26)+(-36)+27=353
(-7)+2=(-5) 9+(-9)=0 (-20)+25=5 51+(-10)=41 (-75)+(-20)=(-95) (-14)+15=1 30+(-20)=10 (-12)+33=21 465+(-23)=442 (-54)+(-26)=(-80) (-36)+27=(-9)