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0,1-[3pe2-(0,5+0,4)]=?



Răspuns :

0,1-[3/2-(0,5+0,4)] =
= 1/10 - [3/2 - (5/10 + 4/10)] =
= 1/10 - (3/2 - 9/10) =
= 1/10 - 3/2 + 9/10 =
= 1/10 - 15/10 + 9/10 =
= -5/10 =
= - 1/2 =
= - 0,5