Răspuns :
(0,25)^-1 =
= (25/100)^-1 =
= 1 / (25/100) = ( 1 : 25/100) = ( 1 × 100/25 )
= 100/25 =
= 4
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= (25/100)^-1 =
= 1 / (25/100) = ( 1 : 25/100) = ( 1 × 100/25 )
= 100/25 =
= 4
______
___