a) √2<dwie całe> 1/4 - (-1<jedna cala> 2/3)² : 2,4
_________________________________________ =
(6-4*2<dwie cale> 1/4) * (1/3)²
b) 5<pięć całych> 1/4:14+7<siedem całych> 1/2 *4
_________________________________________________ =
(36:21/50 - 75 <siedemdziesiat piec calych> 3/14) : 3
c) 7/14 - 1/2 * (2,7 * 5/27 - 0,8) : (-1/2)³ =
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