October 2018 1 27 Report

to jest dzial wyrazenia algrbraiczne rozdzial zadania tekstowe.

Zadanie 1: do pewnej ilosci solanki o stezeniu 8% dosypano 1 kg soli i dolano 1kg wody, otrzymujac solanke o stezeniu 15 % . Ile byla rowna poczatkowa masa tej solanki?


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