January 2019 1 10 Report
Uprość lewą stronę równania, a następnie zgadnij rozwiązanie równania.
a) 4x - 6 + 2x + 7 - 5x = 9
................ = 9
.................

b) 3y - 6 + 3y - 2y + 6 - 2y = 9
................. = 9
....................
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