liczba o 30% wieksza od dwukrotnosci liczby n?
60% 30%+ 30%= 60% -------- Takie trudne ?
2n + 30% * 2n = 2n + 0,3 * 2n = 2n + 0,6n = 2,6n
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60%
30%+ 30%= 60% -------- Takie trudne ?
2n + 30% * 2n = 2n + 0,3 * 2n = 2n + 0,6n = 2,6n