September 2018 2 19 Report

Oblicz :

a) (-1,7)+0,9 =

b) 18+(-20,7)=

c) (-2,7)+ (-3,6)=

d) (-3,4)-(-1,5)=

e)jedna czwarta - jedna druga =

f) ( - siedem dwunastych + trzy ósme =


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